dedicate servers, web hosting, cheap web hosting tips

exim commands

2012-02-09T11:06:00.000-08:00

Exim Commands

exim -bpc - Print a count of the messages in the queue
exim -bp - Print a listing of the messages in the queue (time queued, size, message-id,
sender, recipient):
exim -M emailID - force delivery of one message
exim -Mvl messageID - View Log for message
exim -Mvb messageID - View Body for message
exim -Mvh messageID - View Header for message
exim -Mrm messageID - ReMove message (no errors sent)
exiqgrep -zi | xargs exim -Mrm - Remove all frozen mails in q

REMOVE MAILS BY ID

exim -v -Mrm (MAIL ID HERE)

LIST QUEDED MAILS

exim -bp

OUTPUT NUMBER OF QUEDED MAILS

exim -bpc

DELETE FROZEN MAILS

exim -bp | awk '$6~"frozen" { print $3 }' | xargs exim -Mrm

DELIVER FORCEFULLY EMAILS

exim -qff -v -C /etc/exim.conf &

FREEZE MAILS FROM SENDER

exiqgrep -i -f (MAIL ADDRESS HERE) | xargs exim -Mf

REMOVE MAILS FROM SENDER

exiqgrep -i -f (MAIL ADDRESS HERE) | xargs exim -Mrm

Remove root mails

exim -bp |grep "hostname" |awk '{print $3}' |xargs exim -Mrm

Forcefully sending mails from a domain

exim -v -Rff domainname.com

Remove all frozen messages:

root@localhost# exiqgrep -z -i | xargs exim -Mrm

Remove all messages older than five days (86400 * 5 = 432000 seconds):

root@localhost# exiqgrep -o 432000 -i | xargs exim -Mrm

Start a queue run:

root@localhost# exim -q -v

Start a queue run for just local deliveries:

root@localhost# exim -ql -v

Remove a message from the queue:

root@localhost# exim -Mrm [ ... ]

Freeze a message:

root@localhost# exim -Mf [ ... ]

Thaw a message:

root@localhost# exim -Mt [ ... ]

Deliver a message, whether it's frozen or not, whether the retry time has been reached or not:

root@localhost# exim -M [ ... ]

Deliver a message, but only if the retry time has been reached:

root@localhost# exim -Mc [ ... ]

Force a message to fail and bounce as "cancelled by administrator":

root@localhost# exim -Mg [ ... ]

Remove all frozen messages:

root@localhost# exiqgrep -z -i | xargs exim -Mrm

Remove all messages older than five days (86400 * 5 = 432000 seconds):

root@localhost# exiqgrep -o 432000 -i | xargs exim -Mrm

Freeze all queued mail from a given sender:

root@localhost# exiqgrep -i -f luser@example.tld | xargs exim -Mf

View a message's headers:

root@localhost# exim -Mvh

View a message's body:

root@localhost# exim -Mvb

View a message's logs:

root@localhost# exim -Mvl

Add a recipient to a message:

root@localhost# exim -Mar

[

... ]

Edit the sender of a message:

root@localhost# exim -Mes

Retrieved from "http://mycutelife.net/wiki/index.php?title=Exim_Commands"
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mail game

2012-02-09T11:01:00.000-08:00

1] Removing Bad Mail

for i in `exiqgrep -i -f nobody`; do exim -Mrm $i; done >> Removes Nobody Mail

for i in `exiqgrep -i -o 259200`; do exim -Mrm $i; done >> Removes Mail Older than 3 Days

for i in `exiqgrep -i -f "^<>$"`; do exim -Mrm $i; done >> Removes Mail with Weird Characters (Spam)

[2] Delete Mail by a Domain

for i in `exiqgrep -i -f domain.com`; do exim -Mrm $i; done

[3] Delete Mail for a Domain

for i in `exiqgrep -i -r domain.com`; do exim -Mrm $i; done

[4] Remove Whole Mail Queue

for i in `exiqgrep -i -f `; do exim -Mrm $i; done

[5] Run Mail Queue

runq -qqff&

To find the connections to HTTP

netstat -pan | sort +4 | grep TIME_WAIT | awk '{print $5}' | sed -e s/':.*'//g | sort | uniq -c | sort -k 1 -nr |
head -n 20

To find ddos attack

netstat -an |grep 80
netstat -plan|grep :80|awk {'print $5'}|cut -d: -f 1|sort|uniq -c|sort -nk 1
netstat -plan|grep :25|awk {'print $5'}|cut -d: -f 1|sort|uniq -c|sort -nk 1
watch -n 5 'w; ls -alS /usr/local/apache/domlogs/ '

EXIM

tail -3000 /var/log/exim_mainlog |grep 'rejected RCPT' |awk '{print$4}'|awk -F\[ '{print $2} '|awk -F\] '{print $1}
'|sort | uniq -c | sort -k 1 -nr | head -n 5

Script to find which process are taking too much resources on a server

cd /proc && ls -l */cwd|grep /home|sed -e \ "s#.*/home$.*$#/home\1#"|sort

Find out spammers home directory in cpanel server

grep cwd /var/log/exim_mainlog|grep -v spool

pop attack

tail -1000 /var/log/maillog | grep host= | cut -d= -f2| cut -d" " -f1|sort -n |uniq -c |sort -n

To display last 5 lines of different logs in a single window

watch -n 5 "tail -10 /var/log/secure ; echo "==============================" ; cat /proc/loadavg ; echo
"==============================" ; tail -10 /var/log/messages"

To kill Zombie process

for i in `ps ax | grep Z | awk {'print $1'}`;do kill -9 $(cat /proc/${i}/status | grep PPid | awk {'print
$2'});done

To kill Dead process

for i in `ps ax | grep D | awk {'print $1'}`;do kill -9 $(cat /proc/${i}/status | grep PPid | awk {'print
$2'});done

To Delete frozen mails

exim -bp | awk '$6~"frozen" {print $3 }' | xargs exim -Mrm

Following script will delete the mails in queue which consist of "yahoo.co.in"

grep -rl yahoo.co.in /var/spool/exim/input/ | xargs rm

This will show the number of mails for each domain

exim -bp | exiqsumm | awk '{if ($1 >100)print $0 }' | sort -n

For taking the backup of accounts. Copy the usernames to a file named hi. (Cpanel Server)

for i in `cat hi` ; do /scripts/pkgacct $i ; done

For enabling spamassassin (Cpanel Server)

for i in `cat hi` ; do touch /home/$i/.spamassassinenable ; done

For enabling spambox (Cpanel Server)

for i in `cat hi` ; do touch /home/$i/.spamassassinboxenable ; done

For printing first column in a file test

cat test | awk '{print $1 }'

script to find the disk usage of each reseller accounts and the sub accounts (Cpanel Server)

for i in `grep Reseller_Name /etc/trueuserowners | cut -d: -f 1` ; do du -s /home/$i ; done | awk {'print $1'} > df

total=0 ; for i in `cat df`; do total=$[total+i]; done ; echo $total

Script to restart apache if it is not working

#!/bin/sh
if ps auxc | grep httpd ; then
exit 0
else
echo "HTTP service crash"
/etc/init.d/httpd stop
sleep 3
/etc/init.d/httpd start
echo "httpd restarted on server." | mail -s "httpd (`uname -n`) restarted @ `date`"
sanju@mycutelife.net
fi

Script to check the function "file_get_contents"

$x="google.com";
$cd=file_get_contents($x);
echo $cd;
?>

Following script can crop the domlogs when its size reach 100mb .

#!/bin/bash
for domain in /usr/local/apache/domlogs/*;
do
# Find the domain having more than 100 Mb log file size
if [ 100000 -lt `du $domain | awk {'print $1'} 2> /dev/null` ]
then
{
echo $domain;
echo "splitting the file into sizes of 50 Mb each...";
/usr/local/cpanel/bin/cpuwatch 5.0 split -b 50m $domain ${domain};
echo "Appending the last two sets of files generated";
for i in `ls ${domain}a*| tail -n 2`;
do
tail -n 2 $i;echo $i;
cat $i >> ${domain}.test;
done
}
cp -f ${domain}.test ${domain};
rm -f ${domain}a* ${domain}.test;
echo "done";
fi
done

Script to delete iframe entries of an account

find /home/test/public_html/ $ -name "*.php" -o -name "*.html" -o -iname "*.htm" $ -exec grep -l "pattern" {} \; -exec sed -i "/"pattern"/d" {} \;

Deleting particular line from a file

http://sed.sourceforge.net/sed1line.txt

# delete the last 10 lines of a file
sed -e :a -e '$d;N;2,10ba' -e 'P;D' # method 1

sed -n -e :a -e '1,10!{P;N;D;};N;ba' # method 2

The above will only list the output. The following will delete the entries

sed -i".bak" -e :a -e '$d;N;2,4ba' -e 'P;D' fileName.txt

Here a file with fileName.txt.bak will be created

http://en.kioskea.net/faq/1451-sed-delete-one-or-more-lines-from-a-file

Script to take backup of a single account in daily basis

/scripts/pkgacct user;
mv /home/cpmove-user.tar.gz /home/user/public_html/backup/cpmove-user_$(date +%Y%m%d).tar.gz;
chmod -R 644 /home/user/public_html/backup/*;
chown -R user.user /home//scripts/pkgacct user;

The output should be as follows

cpmove-user_20091026.tar.gz

Check server status remotely with a perl script

http://www.macosxhints.com/article.php?story=20060221135557761
http://www.macosxhints.com/dlfiles/is_tcp_port_listening_pl.txt ----> Script

Shell Script To Monitor Services Such As Web / Http, Ssh, Mail Server

http://bash.cyberciti.biz/monitoring/monitor-unix-linux-network-services/

PHP script to monitor Service Status from local or remotely

http://www.developertutorials.com/tutorials/php/port-scanning-and-service-status-checking-in-php-870/

function check_port($port) {
$conn = @fsockopen("127.0.0.1", $port, $errno, $errstr, 0.2);
if ($conn) {
fclose($conn);
return true;
}
}
function server_report() {
$report = array();
$svcs = array('21'=>'FTP',
'22'=>'SSH',
'25'=>'SMTP',
'80'=>'HTTP',
'110'=>'POP3',
'143'=>'IMAP',
'3306'=>'MySQL');
foreach ($svcs as $port=>$service) {
$report[$service] = check_port($port);
}
return $report;
}
$report = server_report();
?>

Script to delete a line from a file if it have a particular pattern

sed -i "/"pattern"/d" filename

Retrieved from "http://mycutelife.net/wiki/index.php?title=Script"
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100% openvz openvpn installation script

2012-01-31T02:09:00.000-08:00

The scripts works perfectly fine on centos.

#!/bin/bash
# Interactive OpenVPN install script on a OpenVZ VPS
# Tested on CentOS versions 5 to 5.5
# 2011 v1.2
# Author Denis D.
# http://bluemodule.com/software/openvpn-install-script-for-openvz-vps/

echo "################################################"
echo "Interactive OpenVPN Install Script for OpenVZ VPS Machines v1.2"
echo "by Denis D. http://www.bluemodule.com"
echo "Should work on various rpm-based Linux distos."
echo "Tested on CentOS ditros version 5 to 5.5"
echo
echo "Make sure to message your provider and have them enable"
echo "TUN, PPP, IPtables, and NAT modules prior to setting up OpenVPN."
echo
echo "You need to set up the server before creating more client keys."
echo "A separate client keyset is required per connection or machine."
echo "When creating certificated you can put \".\" to skip a field for all fields"
echo "except for \"Common Name\" and password fields."
echo "################################################"
echo
echo
echo "################################################"
echo "Select on option:"
echo "1) Set up new OpenVPN server AND create one client"
echo "2) Create additional clients"
echo "################################################"
read x
if test $x -eq 1; then
echo "Specify server port number that you want the server to use (eg. 54):"
read p
echo "Enter client username that you want to create (eg. client1):"
read c

# get the venet0:0 IP
ip=`grep IPADDR /etc/sysconfig/network-scripts/ifcfg-venet0:0 | awk -F= '{print $2}'`

echo
echo
echo "################################################"
echo "Downloading OpenVPN 2.0.9 and LZO compression library"
echo "################################################"
mkdir /etc/ovpn_install
cd /etc/ovpn_install
wget http://openvpn.net/release/openvpn-2.0.9.tar.gz
wget http://openvpn.net/release/lzo-1.08-4.rf.src.rpm

echo
echo
echo "################################################"
echo "Downloading and Installing Dependencies"
echo "################################################"
yum -y install rpm-build autoconf.noarch zlib-devel pam-devel openssl-devel make gcc

echo
echo
echo "################################################"
echo "Building From Source"
echo "################################################"
rpmbuild --rebuild lzo-1.08-4.rf.src.rpm
rpm -Uvh /usr/src/redhat/RPMS/i386/lzo-*.rpm
rpmbuild -tb openvpn-2.0.9.tar.gz
rpm -Uvh /usr/src/redhat/RPMS/i386/openvpn-2.0.9-1.i386.rpm

echo
echo
echo "################################################"
echo "Creating Server Config"
echo "\"Common Name\" must be filled."
echo "Please insert : server"
echo "################################################"
cp -r /usr/share/doc/openvpn-2.0.9/easy-rsa/ /etc/openvpn/

# creating server.conf file
echo "local $ip" > /etc/openvpn/server.conf
echo "port $p" >> /etc/openvpn/server.conf
echo "proto udp" >> /etc/openvpn/server.conf
echo "dev tun" >> /etc/openvpn/server.conf
echo "ca /etc/openvpn/keys/ca.crt" >> /etc/openvpn/server.conf
echo "cert /etc/openvpn/keys/server.crt" >> /etc/openvpn/server.conf
echo "key /etc/openvpn/keys/server.key" >> /etc/openvpn/server.conf
echo "dh /etc/openvpn/keys/dh1024.pem" >> /etc/openvpn/server.conf
echo "server 10.9.0.0 255.255.255.0" >> /etc/openvpn/server.conf
echo "ifconfig-pool-persist ipp.txt" >> /etc/openvpn/server.conf
echo "push \"redirect-gateway def1\" " >> /etc/openvpn/server.conf
echo "push \"dhcp-option DNS 208.67.222.222\" " >> /etc/openvpn/server.conf
echo "push \"dhcp-option DNS 208.67.220.220\" " >> /etc/openvpn/server.conf
echo "keepalive 5 30" >> /etc/openvpn/server.conf
echo "comp-lzo" >> /etc/openvpn/server.conf
echo "persist-key" >> /etc/openvpn/server.conf
echo "persist-tun" >> /etc/openvpn/server.conf
echo "status server-tcp.log" >> /etc/openvpn/server.conf
echo "verb 3" >> /etc/openvpn/server.conf

cd /etc/openvpn/easy-rsa/2.0/
source ./vars
./vars
./clean-all

echo
echo
echo "################################################"
echo "Building Certifcate Authority"
echo "\"Common Name\" must be filled."
echo "################################################"
./build-ca

echo
echo
echo "################################################"
echo "Building Server Certificate"
echo "\"Common Name\" must be filled."
echo "Please insert : server"
echo "################################################"
./build-key-server server
./build-dh

cp /etc/openvpn/easy-rsa/2.0/keys /etc/openvpn/keys -R

echo
echo
echo "################################################"
echo "Starting Server"
echo "################################################"
service openvpn start

echo
echo
echo "################################################"
echo "Forwarding IPv4 and Enabling It On-boot"
echo "################################################"
echo 1 > /proc/sys/net/ipv4/ip_forward
# saves ipv4 forwarding and and enables it on-boot
sed -e 's/$net.ipv4.ip_forward =$ 0/\1 1/g' /etc/sysctl.conf > /etc/tempsysclt
cat /etc/tempsysclt > /etc/sysctl.conf
rm -f /etc/tempsysclt

echo
echo
echo "################################################"
echo "Updating IPtables Routing and Enabling It On-boot"
echo "################################################"
tunip=`/sbin/ifconfig tun0 | grep 'inet addr:' | cut -d: -f2| cut -d' ' -f1`
iptables -t nat -A POSTROUTING -s $tunip/24 -j SNAT --to $ip
# saves iptables routing rules and enables them on-boot
/sbin/service iptables save
chkconfig iptables on

echo
echo
echo "################################################"
echo "Building certificate for client $c"
echo "\"Common Name\" must be filled."
echo "Please insert like same cert : $c"
echo "################################################"
./build-key $c

echo "client " > /etc/openvpn/keys/$c.ovpn
echo "dev tun " >> /etc/openvpn/keys/$c.ovpn
echo "proto udp " >> /etc/openvpn/keys/$c.ovpn
echo "remote $ip $p " >> /etc/openvpn/keys/$c.ovpn
echo "resolv-retry infinite " >> /etc/openvpn/keys/$c.ovpn
echo "nobind " >> /etc/openvpn/keys/$c.ovpn
echo "persist-key " >> /etc/openvpn/keys/$c.ovpn
echo "persist-tun " >> /etc/openvpn/keys/$c.ovpn
echo "ca ca.crt " >> /etc/openvpn/keys/$c.ovpn
echo "cert $c.crt " >> /etc/openvpn/keys/$c.ovpn
echo "key $c.key " >> /etc/openvpn/keys/$c.ovpn
echo "comp-lzo " >> /etc/openvpn/keys/$c.ovpn
echo "verb 3 " >> /etc/openvpn/keys/$c.ovpn

cp /etc/openvpn/easy-rsa/2.0/keys/$c.crt /etc/openvpn/keys
cp /etc/openvpn/easy-rsa/2.0/keys/$c.key /etc/openvpn/keys

cd /etc/openvpn/keys/
tar czf clientkeys.tgz ca.crt $c.crt $c.key $c.ovpn

echo
echo
echo "################################################"
echo "OpenVPN server successfully installed."
echo "One client keyset for $c generated."
echo "To connect:"
echo "1) Download /etc/openvpn/keys/clientkeys.tgz using SCP client such as WinSCP."
echo "2) Create a folder named VPN in C:\Program Files\OpenVPN\config directory"
echo "3) Extract the contents of clientkeys.tgz to the VPN folder."
echo "4) Start openvpn-gui, right click the tray icon and click Connect."
echo
echo "To generate additonal client keysets, run the script again with option #2."
echo "################################################"

# runs this if option 2 is selected
elif test $x -eq 2; then
echo "Enter client username that you want to create (eg. client2):"
read c

ip=`grep IPADDR /etc/sysconfig/network-scripts/ifcfg-venet0:0 | awk -F= '{print $2}'`
p=`grep -n 'port' /etc/openvpn/server.conf | cut -d' ' -f2`

echo
echo
echo "################################################"
echo "Building certificate for client $c"
echo "\"Common Name\" must be filled."
echo "Please insert like same cert : $c"
echo "################################################"
cd /etc/openvpn/easy-rsa/2.0
source ./vars
./vars
./build-key $c

echo "client " > /etc/openvpn/keys/$c.ovpn
echo "dev tun " >> /etc/openvpn/keys/$c.ovpn
echo "proto udp " >> /etc/openvpn/keys/$c.ovpn
echo "remote $ip $p " >> /etc/openvpn/keys/$c.ovpn
echo "resolv-retry infinite " >> /etc/openvpn/keys/$c.ovpn
echo "nobind " >> /etc/openvpn/keys/$c.ovpn
echo "persist-key " >> /etc/openvpn/keys/$c.ovpn
echo "persist-tun " >> /etc/openvpn/keys/$c.ovpn
echo "ca ca.crt " >> /etc/openvpn/keys/$c.ovpn
echo "cert $c.crt " >> /etc/openvpn/keys/$c.ovpn
echo "key $c.key " >> /etc/openvpn/keys/$c.ovpn
echo "comp-lzo " >> /etc/openvpn/keys/$c.ovpn
echo "verb 3 " >> /etc/openvpn/keys/$c.ovpn

cp /etc/openvpn/easy-rsa/2.0/keys/$c.crt /etc/openvpn/keys
cp /etc/openvpn/easy-rsa/2.0/keys/$c.key /etc/openvpn/keys

cd /etc/openvpn/keys/
tar czf clientkeys.tgz ca.crt $c.crt $c.key $c.ovpn

echo
echo
echo "################################################"
echo "One client keyset for $c generated."
echo "To connect:"
echo "1) Download /etc/openvpn/keys/clientkeys.tgz using SCP client such as WinSCP."
echo "2) Create a folder named VPN in C:\Program Files\OpenVPN\config directory "
echo "3) Extract the contents of clientkeys.tgz to the VPN folder."
echo "4) Start openvpn-gui, right click the tray icon and click Connect."
echo "################################################"

else
echo "Invalid selection, quitting."
exit
fi

copy paste it.

thanks to bluemodule.com

original source: http://bluemodule.com/software/openvpn-install-script-for-openvz-vps/

Subnet applications

2012-01-29T21:18:00.001-08:00

addrs bits pref mask

1 0 /32 255.255.255.255
2 1 /31 255.255.255.254
4 2 /30 255.255.255.252
8 3 /29 255.255.255.248
16 4 /28 255.255.255.240
32 5 /27 255.255.255.224
64 6 /26 255.255.255.192
128 7 /25 255.255.255.128
256 8 /24 255.255.255
512 9 /23 255.255.254
1 K 10 /22 255.255.252
2 K 11 /21 255.255.248
4 K 12 /20 255.255.240
8 K 13 /19 255.255.224
16 K 14 /18 255.255.192
32 K 15 /17 255.255.128
64 K 16 /16 255.255
128 K 17 /15 255.254
256 K 18 /14 255.252
512 K 19 /13 255.248
1 M 20 /12 255.240
2 M 21 /11 255.224
4 M 22 /10 255.192
8 M 23 /9 255.128
16 M 24 /8 255
32 M 25 /7 254
64 M 26 /6 252
128 M 27 /5 248
256 M 28 /4 240
512 M 29 /3 224
1024 M 30 /2 192

hosts subn/c subn/c subn/b subn/b bits hex-mask dec-mask
strict strict

2 64 62 16384 16382 2 fffffffc 255.255.255.252
6 32 30 8192 8190 3 fffffff8 255.255.255.248
14 16 14 4096 4094 4 fffffff0 255.255.255.240
30 8 6 2048 2046 5 ffffffe0 255.255.255.224
62 4 2 1024 1022 6 ffffffc0 255.255.255.192
126 2 0 512 510 7 ffffff80 255.255.255.128
254 256 254 8 ffffff00 255.255.255.0
510 128 126 9 fffffe00 255.255.254.0
1022 64 62 10 fffffc00 255.255.252.0
2046 32 30 11 fffff800 255.255.248.0
4094 16 14 12 fffff000 255.255.240.0
8190 8 6 13 ffffe000 255.255.224.0
16382 4 2 14 ffffc000 255.255.192.0
32766 2 0 15 ffff8000 255.255.128.0

Fix SolusVM Time Zone Issue with VMS

2012-01-22T23:32:00.000-08:00

1- Go to your virtual machine (CTID in solusvm lets say it's 101)
2- rm /etc//localtime
3- ln -s /usr/share/zoneinfo/EST /etc/localtime

Now ssh to you solusvm machine main machine:

rm /etc//localtime
ln -s /usr/share/zoneinfo/EST /etc/localtime

ntpdate us.pool.ntp.org

This will sync the time

now run the cron every night to sync time
crontab -e

0 0 * * * ntpdate us.pool.ntp.org

lost kloxo admin password, how to reset it?

2012-01-20T22:58:00.000-08:00

Use ssh to login to shell:

/script/update --class=client --name=admin --subaction=password --v-password=XXX

XXX is your new password.

remove vps optimized logo

2012-01-05T09:35:00.001-08:00

How-To Change the logo to just say WHM...

Code:

cd /usr/local/cpanel/whostmgr/docroot/themes/x
cp logo_vps.jpg logo_vps.jpg.bak
rm -f logo_vps.jpg
wget http://img84.imageshack.us/img84/6808/logovpsxg9.jpg
mv logovpsxg9.jpg logo_vps.jpg

To prevent it from being changed:

Code:

chattr +i /usr/local/cpanel/whostmgr/docroot/themes/x/logo_vps.jpg

Now for cpanel

cd /usr/local/cpanel/base/frontend/x3/branding
rm top-logo_vps2.png
rm: remove regular file `top-logo_vps2.png'? y
rm top-logo_vps.png -rf
cp top-logo_opt.png top-logo_vps2.png
cp top-logo_opt.png top-logo_vps.png

Prevent Cpanel Update to Alter the logo:

chattr +i /usr/local/cpanel/base/frontend/x3/branding/top-logo_vps2.png

chattr +i /usr/local/cpanel/base/frontend/x3/branding/top-logo_vps.png

Transfer a cpanel Reseller account along With its Websites to another

2011-12-26T01:37:00.001-08:00

Here is the way to transfer a full reseller account to another cpanel server

if you are root you can do that by selecting the account owned by that user.

here is the manual way.

SSH to old server:

Print the names of all account under reseller account and save it to file.

cat /etc/reselleraccountname | grep reseller-main-user-name | awk ‘{print$1}’ | cut -d : -f 1 > backup-user.txt

3) Create backup of these users:

for i in `cat /backup/backup-user.txt`; do /scripts/pkgacct $i; mv /home/cpmove-$i.tar.gz /backup/ ; done

Now copy all these backups to next server where you want the transfer.

SSH server as root server2 .

for i in `cat backup-user.txt `;do /scripts/restorepkg $i;done

check packet loss

2011-11-16T22:31:00.000-08:00

If your website is slow or server acts wierdly, have a look at packet with below command.

mtr -s 1500 -r -c 1000 -i 0.1 server . com

If you find the loss report to your host for a possible fix.

mtr is a utility could be installed on linux and windows.

my favorite commands as a sys admin

2011-04-01T00:11:00.000-07:00

For manual sync of mysql replication

rsync -av --progress --inplace /data/mysql/ to slave:/data/mysql

To find and delete certain files

find . -name "FILE-TO-FIND"-exec rm -rf {} \;

To fix internal server error due to wrong permissions

find /home*/*/public_html -type d -perm 0777 -exec chmod 755 {} \;
find /home*/*/public_html -type f -perm 0666 -exec chmod 644 {} \;

find /some/pathto/directory -type f -path '*abcdir/*.php' | xargs -i bash -c " rm –f -v {}"

chmod -R 644 * ; sudo chmod -R uga+X *

top 10 memory usage

ps -auxf | sort -nr -k 4 | head -10

top 10 cpu usage

ps -auxf | sort -nr -k 3 | head -10

ps -e -orss=,args= | sort -b -k1,1n | pr -TW$COLUMNS

Sort Unix processes on ps by highest memory usage

just a snippet, –sort is not good for me..try
ps -eo pmem,pcpu,rss,vsize,args | sort -k 1 -r | more

To see only the memory resources occupied by each category of processes, such as Apache httpd, MySQL mysqld or Java, use the following command:

ps aux | awk '{print $4"\t"$11}' | sort | uniq -c | awk '{print $2" "$1" "$3}' | sort -nr

To limit CPU usage of the process called firefox to 30%, enter:
# cpulimit -e firefox -l 30

How to make a forum free

2010-09-17T10:48:00.000-07:00

Forums are places to share knowledge and earn online. Many webmasters are making niche forums to try their luck. Forums can get easy traffic from search engine as most of content shared on forums is genuine human content posted by different users.

Let’s find out how to make a forum free and easily.

Purchase Hosting with Fantastico:
For any forum to come online you need a web hosting. Purchase a domain from domain registrar for your forum. Domain name is a unique identity or address of your website.
Purchase an affordable web hosting plan that offers cPanel and Fantastico DE Luxe. Fantastico allows easy installation of many soft wares including forum software.
Below are some open source and free forum software
phpBB
MyBB
SMF
I would suggest you to choose Shopaserver.com as best and cheap cpanel hosting, moreover their support is extremely helpful, you can ask help or even request for forum installation. Voilla! Their support betrayed many customers :)
Installation:
Once you are finished with domain name and hosting account, now is the time to install forum application. I would use phpbb as it is widely used by webmaster because of various benefits.
Login to cPanel and find Fantastico icon with a smiley icon. Go to forum section and click phpbb. Follow the installation steps, which will ask for installation directory, forum admin user name and password.
Before this create a database from cPanel using database wizard, also create a user and assign rights to this user on newly created database. Note down user name and database name. You will need this information while phpbb-seo installation.
Forum Administration:
Once phpbb-seo is installed, now is the time to add categories to your forum. Go to administration control panel, find forum section and start adding categories.
After adding categories, you have to add permissions from permission section to make categories accessible online. The best way is to assign default permission to all categories i.e bot access to abc category.
Start promoting your forum and add useful plugins, styles and themes to make it attractive.

Top 3 Tips To Choose Web Hosting

2010-09-17T04:33:00.000-07:00

It is difficult to choose perfect web hosting from over crowded market with various offers to attract customers. You need to be wise to differentiate a good hosting company from bad ones.
Here are easy tips to help you to decide the perfect web hosting for your website.

List Down Your Needs:

Before getting ready to purchase a hosting account, the first step is to list down all your hosting needs. Estimate the size of code and future growth, number of visits per month etc. Hosting platform required for your website, do your math before purchasing a hosting package.

Hosting Plan:

Verify hosting plan and important features required for your website. Do not purchase a poor plan lacking quality features and benefits.
Some valuable features are cPanel, Fantastico, Add-on domains, Money Back Guarantee, 99% network up-time guarantee etc.
cPanel and Fantastico is best combination to manage websites, take backups, create databases and perform daily maintenance tasks. Add-on domains allow you to host multiple website using single hosting account. Money back guarantee ensure quality and delivery of performance.

Users Opinions:

Before signing up verify the credibility of your hosting provider. How people think about it. A bad host has many angry customers. These angry customers submit negative reviews online. Search for good and bad reviews to judge a quality host.

Recommende hosts: Shopaserver, wiredtree, Softlayer

3 tips to choose Word Press hosting

2010-08-23T08:07:00.000-07:00

Word Press is very popular these days. Word Press provide single and power interface to blog and host business websites. Word Press is free with hundreds of valuable plugins available online. You can also find quality templates from internet totally free.

Here are 3 easy tips to choose Word Press hosing.

1- Cheap web hosting

Do not opt for free hosting unless you are experimenting or learning your online venture. You can save money by selecting cheap web hosting provider with good features and services. A cheap hosting plan ranges from $3 to $9 per month.
High price is not necessarily equal to best performance. There are many good hosting companies with cheap packages and good performance.

2- Features and Benefits:

Inspect the features and benefits carefully. Choose a rich featured web hosting provider with good quality. Do not miss golden features like cPanel and Fantastico De Luxe for your websites.

Some other important features are add-on domains to host multiple websites using single account. Multiple email and ftp accounts for better website management.

Consider money back guarantee to ensure quality of services and satisfaction. A good host offers money back guarantee to ensure their dedication and honesty with their services.

99% network up-time is necessary for online presence. Poor up-time can ruin your website in search engine ranking.

Technical support is another important feature to look while choosing a hosting company for your website. Usually companies offer 24/7 technical support to their customers.

3- Online Reviews:

Always search for good and bad customer reviews available online. Do not purchase a hosting account from a host with many bad reviews. Also be wise to analyze online reviews. There are many affiliate websites promoting specific hosting companies with biased reviews.

Be wise to judge online reviews, as there are very few quality review websites available online.

For best price hosting I would suggest you to choose cpanel hosting and reseller hosting.

Top 3 reasons to choose shopaserver as web hosting

2010-08-10T11:32:00.000-07:00

Shopaserver is popular for affordability and performance. Below are top 3 reasons to choose shopaserver.com as your web host.

Unbeatable Price:

Shopaserver has unbeatable price. Their basic plan starts from $2.5 per month with no yearly contracts. Unlikely to other hosts they offer straight price which is extremely affordable with big performance. You can also host multiple websites and subdomains using this plan.

Shopaserver offers ecommerce plans in $5/month only, and reseller plan in $9.5/month only. No big hosts are offering this price with amazing features.

Rich Features:

Regardless of tiny price, they have amazing features lists, there is no restrictions on databases, number of domains or email accounts. You can enjoy cPanel as your control panel along with other rich features.

Friendly Support:

They have extremely friendly support. Many beginners choose shopaserver as web host because of extremely friendly technical support.

Shopaserver is industry leading cpanel hosting and reseller hosting provider in tiny price bundled with rich features.

How to choose web hosting

2010-08-09T04:47:00.000-07:00

It's pretty confusing to choose the right web host from hundreds of various webhosts with variable packages and plans.

Some tips to evaluate hosting provider.

Price and Features:

Check carefully price and features in offered hosting plan. Some necessary features are cPanel, email accounts, add-on domains, ftp and backup system. cpanel hosting is any easy hosting which makes the website management tasks easier.

Affordable price ranges from $3 to $11 per month. Do not spend high amount in shared hosting unless you have VPS or dedicated server.

Support:

Verify the response of support. A good web host responds to ticket fast and any problem do not takes more than 24 hours to resolve.

Suggested web hosts:

Shopaserver , Hostgator, Site5 , Dreamhost

High traffic webmaster forums to help you out!

2010-08-06T12:10:00.000-07:00

Forums are best places to learn and earn altogether.

Below are some top forums to help you out in webmaster stuff.

Every thing Cheap:

If you are looking to buy any thing cheap like articles, seo service ,web hosting
or customized job. the digitalpoint is the right place for you.
forums.digitalpoint.com

Sell it expensive:

If you are looking to sell webmaster stuff at high price or want quality customers, than go to warriorforum, thats the right place to sell the things at higher price.

Gain Webmaster Knowlege:

You can gain and share knowlege at v7n.com , one of the bes forum to learn online stuff.

Cheap Web Hosting:

If you are looking for cheap cpanel web hostig, than freewebspace.net is the right place for you to buy cheap and free hosting

Web Hosting:

If you are looking to buy or sell any thing relevant to web hosting, than webhostingtalk.com is the best options for you. You will find all types of hosting i.e cpanel hosting , reseller hositng, dedicated or vps. Very good stuff there!

coupon codes to cut hosting cost

2010-08-04T01:04:00.000-07:00

Web hosting companies regularly announce coupon codes to promote their services. These prices are lower than their regular prices.

You can find these coupons on coupon code websites. These coupons are also available at web master forums in weekly hosting offer section.

Be clever to cash this opportunity to save your hosting cost.

Today I would like to share one coupon of best cheap cpanel hosting (shopaserver.com)

20off for 20% off.

Enjoy!

Be aware of web hosting review sites

2010-08-03T08:05:00.000-07:00

There are many web hosting reviews and rating sites out there. These sites show the chart of top 10 hosting with good and bad reviews.

Many beginners are fooled by these websites. In reality most of these websites are running web hosting affiliate programs. They get paid by referring the clients to web hosting companies.

They have fake and biased reviews. Do not trust such web site blindly. Be wise while checking the online reviews. Always search for bad reviews before signing up to any web host. If number of bad review out weigh the good one than its alarming. Stay away from hosts having too many bad reviews. Few bad reviews are pretty normal, as it is very hard to make every one happy.

Choose affordable cpanel web hosting for your websites. Check the price and features carefully. Do not pay for a year unless you are fully confident.

How to make a website

2010-07-31T11:34:00.000-07:00

Are you interested in making a website. Website is a way to reach billions.
You can express your thoughts via blog, earn money from business website or share quality stuff with personal website.

Let's find out how easy is to make a website.

First of all buy a domain name, a domain is unique identity of your website, or in simple word it is your website address. Buy a domain from some domain registrar i.e Godaddy, name.com , internet.bs, this will cost you round about $7 to $9 per year.

Buy a hosting account with cpanel and fantastico from any good web hosting company, i.e Shopaserver.com. You will be given login information to upload your website.

Install WordPress using fantastico or tell your host to install wordpress for you. WordPress is free content management system that allows you to update daily contents.
You can make web pages or posts by logging into wordpress. Wordpress provides you platform to have a free website, there are many free themes, plugins available online.

I would suggest to buy cheap cpanel hosting or reseller hosting if you have many websites.
have fun!

Why cpanel hosting

2010-07-30T23:58:00.000-07:00

cpanel hosting is most popular hosting these days. cPanel provides flexibility and easy manageability to your websites.

Some of the prominent features are :

Add-on domains:

You can easily host multiple websites using add-on domains, you also create subdomains, multiple domains and park them using cpanel.

Backup:

In cPanel hosting you get daily backups of your home directory and databases to save your code and website.

Database Wizards:

With database wizards you can create, edit and delete mysql databases. Perform day to day tasks using cpanel , and phpMyadmin.

Email accounts:

cPanel offers single interface to perform many complex tasks easily. You can create, edit , forward and delete email account using cpanel.

Ftp:

You can upload and download your code, update files using ftp and File Manager provided within cpanel

Always choose an affordable cpanel hosting and cpanel reseller hosting for stability and easy manageability

Mistakes to avoid while choosing a web host

2010-07-30T08:29:00.000-07:00

It's pretty confusing to select right web hosting provider as a newbie. Below are some common mistakes to void while choosing a hosting company.

Stay away from Reviews sites:

Mostly review websites are affiliates of hosting companies, they reffer the clients to most paying host. Do not follow reviews and rating blindly.

Unlimited Offers:

Many web hosts try to attract customers with unlimited offers. Unlimited everything is just a marketing gimmick. Stay away from such fool offers or be wise to understand the limits of such host.

Such hosts usually have limits in their terms and condition.

Buying domain and hosting from single place:
Do not buy domains and hosting package from single host. Avoid putting all eggs in one basket.

Limited Features:

Do not miss important features like cPanel, Fantastico, Email account etc.

Try to buy an affordable cpanel hosting with rich features.

Recommended Hosts: Shopaserever, Hostgator, Site5, Bluehost

Which type of web hosting do you need?

2010-07-28T04:02:00.001-07:00

There are many web hosts offering different types of web hosting in industry. It's pretty confusing to choose right web hosting as a beginner.

Let's see what type of hosting is required to your website.

Some major types of web hosting:

a- Shared
b- VPS
c- Dedicated
d- Email
e- Ftp

Shared hosting:

In this type of web hosting many websites are shared on single server. This is the cheapest and popular type of web-hosting.

If you are a beginner and you don't have thousands of visitors than this is the right kind of web hosting for you.

VPS hosting:

This type of web hosting is good for bigger website having couple of thousands users per day or if your website code is heavy i.e image or video website.

Dedicated hosting

This type of hosting is for high traffic and heavy websites, where number of dedicated machines are used to support millions of users a day. This is the most expensive type of web hosting

Email and Ftp hosting

At time you need on-line storage or backup of your code, or your company needs to send emails.

Choose web hosting carefully, evaluating the features like cpanel hosting, fantastico, add-on domains etc.

have fun!

Mistakes to avoid while choosing cpanel hosting

2010-07-27T01:50:00.000-07:00

Avoid below mistakes while choosing a web hosting provider

1- Putting all eggs in one basket:

Do not buy domain and hosting from single provider, unless you are 200% fully confident on them
Try to buy domain and hosting accounts from two different companies.

2- Unlimited hosting

Do not blindly believe on unlimited offers. Unlimited offers are not true in real sense. Do not get over excited with such offers.

3- Backup process

Many webmaster avoid backup process which is one of the important process for any website existence.
Take daily or weekly backups to ensure your website safety.

Always choose quality cpanel hosting having rich features to help you in long run.

free vs paid hosting

2010-06-26T10:11:00.001-07:00

Are you going to launch your own website then the first thing you will need is good web hosting service. Finding a reliable web hosting service has become very convenient with the presence of myriads of web hosting companies online. These companies can be divided into a couple of groups; one is offering free web hosting while other is offering paid web hosting service. Being novice in this field you will be confused about what to choose and what to leave. Therefore here we have discussed few aspects of free and paid web hosting to make your decision easier.

Let’s take free web hosting first. The word ‘free’ always seems attractive linked with anything. Same is the case with web hosting. Though free web hosting will be an attractive offer for those who have little amount in hand to make their website run properly but such free offers do not give guarantee for performance and reliability. These free offers actually serves for service promotion not for earning money therefore web hosting companies offer free services to become more and more popular.

While on the other hand paid web hosting not only gives you reliability and stability in their performance but also offer additional features including email account, user control panels, site statistics check and complete control over your website file.

So you have to ponder over these important things while choosing the appropriate web hosting service for your newly developed website and then take the final decision according to your financial capacity and expected outcome.

Our recommendation is cheap web hosting instead of free hosting , There are many good web hosts with excellent price and features, check out shopaserver for cpanel hosting they have nice plans. you can also check out web hosting directories here for best web hosting

web hosting

2010-05-18T05:19:00.001-07:00

One of the most important decisions that most online businesses have to make is choosing the right kind of web hosting service. With a reliable Hosting provider, you won't face many problems, however poor web hosting service can be a nightmare.
Choosing the right kind of web hosting service can be a very complex task at times as there are some very important features that you need to make sure before purchasing a hosting account. Below are few tips to look while choosing the hosting service for your website.
Hosting space
A web hosting service provider usually assign you a certain amount of space for your websites.
Don’t go for hosts offering unlimited disk space, unlimited hosting is a marketing gimmick to attract customers. Usually website don’t occupy much disk space, unless they have huge images or videos in code. Estimate the size of your code and database (for dynamic websites) , also consider some extra space for future needs. Your web hosting company should be able to provide you enough space, especially if your website is rich in graphics or multimedia.
Bandwidth or data transfer
You also need to see if the hosting company provides you with sufficient bandwidth for efficient data transfer. After all it's your website and you need to ensure that you are getting the best services for the money you invest.
Control Panel
You need a control panel for daily maitenace tasks or taking backups. Cpanel is one of the most popular and stable control panel in market. Always choose a hosting that offers you Cpanel or some other popular control panel like Directadmin etc.
FTP access is very crucial since it provides the ability to upload new pages. Some web hosting service providers allow you to just design your web pages with their own personal web builder. This may be useful for beginners however you need to ensure if they provide you the facility to expand later when you enhance your online business capabilities.
Customer care
Does the web hosting service provide you supports? Do they respond rapidly to your online tickets or emails? Can you depend on them?
Try to email your web host for differen queries or contact them on live chat, this will give you idea of support department. How quick and helpful they are.

Price
Price is also one factor that you should look out for when choosing the best web hosting service. It's not necessarily true that the most expensive hosts are the best. Simply compare prices and services before you finalize one. There are many cheap web host offering excellent services in tiny price.

Linux Hosting Server Advantages

2010-04-20T04:49:00.001-07:00

Linux AND Windows hosting server hosting server is a constant yield huge competitive Miester overalls ALUSTAR stop. Offer Each individual strengths and weaknesses. Kunin select-service web hosting service provider first, it is usually the opportunity for either or files in Windows-Linux server. This selection is based on the individual client, since I need both excellent solutions are.

Benefits

Provides Many Benefits of using the Linux server software ALUSTAR selection Thanx. Among other things, advantages include:

* Open source Software
* Linux Convert
* ECONOMIC
* Scripting language compatibility
* Access to the database
* Safety / Stability

Open Source Software

Key advantage of Linux with other open-source server software ALUSTAR. This simply means that the license fees as related software. Therefore, any KUKA can be used and the platform is located on the server free of charge, any mileage. This also means open source software users add improved continuously, and CODE. This is a costly Nahda considerable benefit to the server software.

Linux Conversion

Napper feature is the ability to easily convert Windows to Linux-based web site. IF NOT satisfied Linux user programs I have the opportunity to host the website files to Windows with little effort. In addition, trained the Site page Can TRANSFORM fits easily migrate a user's requirements. This is the perfect extension of the growing web and.

ECONOMIC

Because it, and that the free Linux open-source software, therefore, is a popular choice. Associated distribution of the costs are only enforced against the owner or the host. Is less than the cost of a translator to pay the full price of the server software Other.

Scripting Language Compatibility

Linux more compatible programming languages such as MySQL, Perl, PHP and other platforms for hosting. NIIT's website if the claim can hold Linux. Compatibility is a highly reliable and efficient effort in vain Vahan.

Access to the database

Linux hosting offers a number of EMI's most popular databases, Lukie, mSQL, MySQL, and PostgreSQL. Nama databases Communicate Effective websites fast information retrieval. Since these are built in relation to each other, together they collectively with each other website AND leavers Maksimir.

Security / stability

Linux olev said better security and stability of server platforms Muut Thanx. Since the open-source software, Linux software is less attacks as a translator and more stable. Since the security and stability, Linux has become a popular choice for professionals and web programmers.

Av Linux popularity, mainly due to the open source. As a result, null and void is affordable, safe AND Vaka, who have ALL the characteristics of relying on NIIT, Web development, which are in the world. Since Linux is expanding and growing Prev, Lavoisier become a server hosting a woman ALUSTAR selection reasons.

smart hosting

2010-04-15T00:25:00.000-07:00

There are 3 ways to be smart with accommodation. If you follow the tips mentioned in this article is easier for you to choose a web host that suits your needs.

Way # 1 - Be careful when you are looking for accommodation reviews

If you type in google phrases like hotel room or a similar one is a large number of websites with the top 10 companies. The site tries to act as an independent review sites, but most of them are affiliates only pay high commissions for each sale. The honest can be found in the forums. There are several specialized forums on shared hosting and many other webmaster forums, where you can find independent studies.

Way # 2 - Evidence of the company before ordering hosting plans

Web hosting providers claim to have fast customer service works 24 hours a day, 7 days a week? Try - I send a message with your questions and see how fast you respond. Take into account not only the response time, but also the quality of the response.

Way # 3 - Check availability of web hosting

Good availability is one of the most important factors for choosing a web hosting provider. Be smart and certain services of third parties which measures the uptime. Reliable web hosting service must be monitored by the 3rd party and not only for himself. Better than 99.5% uptime is considered excellent, especially availability of 99.75% effective.

cut webhosting regular price with coupons

2009-09-18T03:12:00.000-07:00

there are number of webhosts offering coupons and code to cut there regular price.
for example I bought two domains each having regular price approx. $12 but with
coupon I was able to reduce it to $7.49 each.

here are godaddy coupons to cut there regular price.

please post more coupons in comment section if you have any

cjc749fat - $7.49 .COMs (exp 9/30/09)

cjcfat30 - $5 Off w/ $30 Purchase (exp 9/30/09)

cjcfat50 - $10 Off w/ $50 Purchase (exp 9/30/09)

cjcfat75 - 15% Off w/ $75 Purchase (exp 9/30/09)

cjcfat10 - 10% off any purchase (exp 9/30/09)

cjcfat20h - 20% off Shared Hosting (exp 9/30/09)

Edit by Moderator- The coupons above have been extended through September, the expiration dates have been edited to reflect that

OYH7 - $2.50 off / $7.49 any .COM (renewals too... just used it)

BTPS101 - 20% any order of $50 or more

BTPS111 - 10% off anything

BTPS255 - 25% off $100 or more

OYH5 - 10% off whatever

OYH6 - $5 off a $30 purchase

chill5 - 10% off

chill6 - $5 off $30

chill7 - $7.49 .coms

hash5 - 10% off

hash6 - $5 off $30

hash7 - $7.49 .com registration

gdd1101c - 10% off any order of $40 or more

I will post more for other hosting companies too
just keep in touch!

Mysql backups tips

2009-09-12T03:06:00.003-07:00

you need mysql backup? you are doing critical work :) strictly talking about live web server environment.
you need to migrate your database or your website.
you need some edition in database
need to restore corrupted mysql database.

whatever your need is here are few methods to take backups

by command line:

method1:

mysqldump -u (user) -p(password without space) (databasename)

> /path/to-save/database.sql

example: mysqldump -u john -pjohn123 mydb > /home/john/mydbtodaydate.sql

Restore easy
------------

mysql -u -p(password) (databasename) < /path/to/backedup file
example: mysql -u john -pjohn123 mydb < /var/olddb.sql

these are
easy, reliable common methods to backups and restore window guys can use sqlyog for them if they are unhappy with command line some more examples MySql Dump without data (only structure) mysqldump -u dbuser -p[pwd] --no-data database > database_backup.sql

this will backup the structure of database without data
it is useful when you need make a copy of database but don't want to download huge volume of database

For cpanel guys, in cpanel you have limitation of size to restore data, anyway you can restore data from your PC to server using cpanel
but if you have large database size than situation becomes hard, you cannot restore it from your PC as well as from server, but nothing is last you can restore it using ssh and command line

so command line wins :) sorry to GUI guys

shopaserver.com an excellent web host for small/startup and freelancers

2009-09-07T09:03:00.000-07:00

There are hundreds and thousands of hosts claiming best and cheaper packages but rarely suit to newbie small/startups and freelancers. most of such hosting companies have hidden cost in their packages.
today market is filled up with freelancers, small/startups delivering quality work to market.
For newbie and freelancers it is hard to pay allot of money to host for there websites and portfolios.
I found shopaserver.com as best choice for such startups and freelancers. they offer excellent affordable packages.shopaserver offer special portfolio and personal plans with excellent website features including php rich features, blogs, wordpress and much more. on top of all price is awesome you can have a portfolio or small website in $2.5 /month plus performance is key feature of this host. servers hardware brand is DEll which I use to love allot. there datacenter is in Texas and one of the most popular and reputed data center.

I would love to recommend freelancers to benefit from portfolio plan and small startups to have personal and business plan. small startups can have bulk website
at reasonable margin so they can earn allot.

So get ready to start saving by paying less and start earning by your websites

have fun with websites :)

Find a better web host

2009-08-22T23:09:00.000-07:00

you can see thousands of web host offering cheaper packages. it is difficult to decide
web host. here few tips that will help you to decide.

read review google webhost review
unfortunately there are review sites which are not showing genuine ratting but still
not every thing is lost

be careful some big host also have paid review so you need to be intelligent in it

check the agreement what a web host actually providing you and where he is limiting you

go to forums and ask for some one who already experiencing web host services

some quality web host I would recommend are

www.theplanet.com for dedicated servers I am really fan of them

www.shopaserver.com for shared and small sites this host is fair, simple and best
in price plans and performance

stay away hosts

justhost.com dont get victim by there high marketing just stay away

wish you better host )

how to prevent your domain from getting black listed

2009-06-07T22:37:00.000-07:00

people want there site get propogated in days, some may be in mins.

for this purpose they send allot of mails to public without taking precautions
and ultimately get black or grey listed.
here are few tips to avoid such situation.

First of verify dns is resolving properly forward and reverse record of you mail
server.
it should not be garbled name for example abclts90909.webhost.com
proper name is something like mymail.myserver.com
this will save you allot

Next thing is to check content your email. Usually emails are filtered before
delivery by various servers software filters for certain keywords.
you need to avoid these words in your email else your mail will land to spam or junk folder
you can google for list of such words.
There are also many softwares available to check spam words.

well you can test your domain here:
dnsstuff.com

well folks! enough for now. any query please comment

hard link in windows 2008 server

2009-06-03T02:53:00.000-07:00

I have configured ftp server for my developers team. they were in need of some directories which were not in ftp root. As I am linux guy so
I decided to put hard link in ftp document root so they can access folder even if it is in different location.

note: making shortcut or soft hyperlink will not work in ftp

so how we make hard link that can be accessible in ftp server

Here we go!

Goto command line

mklink /d nameofyourlink pathofdir

so real example will be :

mklink /d mylink c:\windows

how to recover mysql root password

2009-06-02T23:37:00.000-07:00

Forgot root password?
never mind

follow 3 easy steps and recover mysql root password

first of all stop mysqld service

#service mysqld stop or /etc/init.d/mysqld stop

start with skip grant table option

#mysqld_safe --skip-grant-tables &

now login with root without any password

# mysql -u root

here you got it!
now for own safety change mysql root password

mysql> set password=PASSWORD('yourpasswd');
mysql> flush privileges;

now stop mysql service and start it again

how to choose best web host

2009-06-02T08:30:00.000-07:00

choosing the best web host is confusing. Allot of web hosts attracting audience with different tricks.

here are few tips to choose best Web Host

1- check different review sites for top 10 , top 20 best web hosts, now! your 60 % work is done

2- Best know your needs

3- see features in details

4- compare cost with features

5- don't compromise on reliability

6- try to get 100 % network time

7-check what security you are given at least basic dos protection is your right :)

8- Don't get lost in general term like Pentium 4 , ask for hardware brand, Dell, HP, Supermicro well my choice is Dell :)

9-have a plan for scalability and choose right host which gives you minimum down time in any case

Good luck guys!

any question? comments are at bottom :)

easy full backup

2009-06-02T02:54:00.000-07:00

Backup is very important task in system administration.
Never ever! underestimate the importance of backup.
its your survival.

make some cool and simple scripts for backup
you can use amanda, Backula for backups management

There are many scripts and methods available for backup,
any way here is a simple way to take full backup by cron job

crontab -e
press i for insert

0 0 * * * cp -rf /path/to/mysql /pathyouwant to copy

for example
0 0 * * * cp -rf /var/lib/mysql /backup

this will copy mysql folder including all databases to /backup folder
at midnight

how to check if your processor is 64-bit or 32-bit in linux

2009-06-01T21:04:00.000-07:00

you can check with a simple command :

grep ' lm ' /proc/cpuinfo

output must be like:

flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl est cid cx16 xtpr lahf_lm

If blank output nothing gets printed it means its not 64 bit.
lm= long mode

How to check if your linux version is 32 bit or 64 bit
======================================================
uname -m

for 64 bit output= x86_64
for 32 bit output= i686

hmm.. so check your machines now :)

dos vs linux commands

2009-06-01T03:02:00.000-07:00

Dos guys in linux

Command's Purpose	MS-DOS	Linux	Basic Linux Example
Copies files	`copy`	`cp`	`cp thisfile.txt /home/thisdirectory`
Moves the files	`move`	`mv`	`mv thisfile.txt /home/thisdirectory`
Lists of files	`dir`	`ls`	`ls`
Clears the screen	`cls`	`clear`	`clear`
Closes prompt windows	`exit`	`exit`	`exit`
Displays or set date	`date`	`date`	`date`
Delete files	`del`	`rm`	`rm thisfile.txt`
"Echoes" output on screen	`echo`	`echo`	`echo this message`
Edits files simple text editor	`edit`	`pico`[a]	`pico thisfile.txt`
Compares the contents of files in between	`fc`	`diff`	`diff file1 file2`
Finds a string of text in file	`find`	`grep`	`grep this word or phrase` `thisfile.txt`
Formats floppy	`format a:` (if floppy's in `A:`)	`mke2fs` (or `mformat`[b])	`/sbin/mke2fs /dev/fd0` (`/dev/fd0` is the Linux equivalent of `A:`)
Displays command line help	`command /?`	`man`[c]	`man command`
Creates directory	`mkdir`	`mkdir`	`mkdir directory`
Screens through file	`more`	`less`[d]	`less thisfile.txt`
Renames file	`ren`	`mv`	`mv thisfile.txt thatfile.txt`[e]
Shows your location in FS	`chdir`	`pwd`	`pwd`
Changes dir.s with a specified path (absolute path)	`cd pathname`	`cd pathname`	`cd /directory/directory`
Change dir.s with a relative paths	`cd ..`	`cd ..`	`cd ..`
Displays the time	`time`	`date`	`date`
Shows amount of RAM and usage	`mem`	`free`	`procinfo`

some use ful commands for linux guys

2009-06-01T01:16:00.002-07:00

netstat -a -e

displays network connection

du * -sh

display directory size disk usage use it to track which dir is taking more size

free -m

tells you free memory and used memory details

last reboot

tracks your system reboot

grep xyz /etc/squid/squid.conf xyz=text /etc/squid/squid.conf= path to file which you want search

search some text within file

df -h

list partitions with disk usage

tips and trick , enjoy system administration

2009-05-28T21:20:00.000-07:00

why my email is not working?urgent! our site is down!
quick! our server is down!
"IT deparment are Cost centers"
we need cheapest and reliable server
our site get hacked !!!! what to do
partition is 100% full!
CPU usage is alarming!
site response is very very slow!

sys admins have to face such situations daily. I will discuss some tips to ease
your daily life and relax. in fact sys admin is the guy who can realy relax in office just monitor servers and services health. get alert before most of the things go wrong and get enough time to fix them.
so guys are you ready for you server?doesn't matter if it is dedicated server , or your local area network server, after all server is a server :)

First thing is to prepare best deployment plan, if you want servers dont disturb you, getting a call after midnight telling you that your server is in critical situation than do some work on plan and sleep tight.

Planning will help you allot. what should be covered in your plan:

Things to be planned:

Application needs

what your application needs from you?
what are some hardware needs?
what is your budget, what to do for cost effective solution?

Capacity management

how important is your application, website or code whatever you wana say :)
do you need a failover, redundancy , hot backups, offsite backups?

Security

Firewalls, intrusion detection how to safe your server from attacks
Some kind of monitoring system which send you an alert before any thing goes wrong.

Scalability

when will you need to add another server what your maximum limits
where is bottleneck most of the time is memory :)
do you need to upgrade existing hardware or need to add one more server

Disaster recovery plan

how to handle situation if any thing goes wrong for example you hard disk crashes, data deleted mistakenly, worst scenerio if your site is hacked , you have to prepare a plan to recover this scenrio.

Business Continuity Plan

For mission critical servers, in fact this is a task which management has to do but sys admin play an important role in it.
how to continue you business in worst scenario, earth quick, fire threat, flooding etc.
how to stay up and satisfy you customers.

To Be Continued...