Script to monitor exim mail queue

==> Features
* This particular script alerts the admin if the mail queue is larger than the specified limit
* Script for EXIM Mail Servers

==> Usage
* Copy the below code to a file and give it execute permission
Code:
$ chmod 755 [file_name]

* Set the code to run every 30 minutes by configuring it as a cron job
Code:
*/30 * * * * /bin/sh [/path/to/file] > /dev/null 2>&1

* Edit the variables under the section: "Edit here" to suit your requirements

==> Script
Code:
#!/bin/bash
# Script from www.r6host.com to alert admin about larger mail queue
# Save the file as eximqueue.sh

######### Edit here ##########

_mail_user=info@r6host.com # Set this to your email id to receive alerts on mail queue
_limit=200 # Set the limit here

##############################

clear;
_result="/tmp/eximqueue.txt"
_queue="`exim-bpc`"

if [ "$_queue" -ge "$_limit" ]; then
echo "Current queue is: $_queue" > $_result
echo "Summary of Mail queue" >> $_result
echo "`exim -bp | exiqsumm`" >> $_result
mail -s "Number of mails on `hostname` : $_queue" $_mail_user < $_result
cat $_result
fi

rm -f $_result

Counting Ips in an access log

So,  If you need to look through an apache access log and count how many IP addresses there are this is how:

root@sertechs [~]# cd /usr/local/apache/logs/

root@sertechs [~]#  cat access_log | awk '{print$1}' | sort | uniq -c | sort -nr | less

So this command will write out your access file to screen, use awk to print the first column, sort it, get the unique values, then sort it with a count, and print to "less".

Very useful to see if your being scraped!

FIND Command

Some examples:

Find all files with 777 permissions:
find . -type f -perm 777 -print

Find all files that are older than 14 days and ls:
find . -type f -mtime +14 -exec ls -l {} ;

Find all your writable files and list them:
find . -perm -0777 -type f -ls

Find files and change their permission to writeable:
find . -name "NAME*" -exec chmod 666 {} ;

Find files created in the past 7 days:
find . -mtime -7 -type f

Find files modified in the past 7 days:
find . -mtime -7 -type f

Find files owned by a particular user:
find . -user esofthub

Find files that were modified more than 7 days ago and tar them into an archive (with a date in the name):
find . -type f -mtime +7 | xargs tar -cvf `date '+%d%m%Y'_archive.tar`

Find files that were modified less than 7 days ago and tar them into an archive (with a date in the name):
find . -type f -mtime -7 | xargs tar -cvf `date '+%d%m%Y'_archive.tar`

Find how many files are in a path:
find . -type f -exec basename {} ; | wc -l

Find the top 50 Biggest Files:
find / -type f -not -path "/proc/*" -not -path "/dev/*" -not -path "/sys/*" -not -path "/home/rack/*" -printf "%s %h/%fn" | sort -rn -k1 | head -n 50 | awk '{print $1/1048576 "MB" " " $2}'

Install zend optimiser on direct admin server

cd /usr/local/directadmin/custombuild

./build update

vi /usr/local/directadmin/custombuild/options.conf

Change no to yes in options.conf

./build zend

How to enable open_basedir for particular domain in plesk

SSH into your Plesk machine as “root” and cd to the conf directory for the domain.

Create a “vhost.conf” file in “/var/www/vhosts/<domain name>/conf/”

<Directory /var/www/vhosts/<domain name>/httpdocs>
php_admin_value safe_mode on
php_admin_value open_basedir none
</Directory>

Rebuild the domain configs for the particular host via::–

[    #/usr/local/psa/admin/sbin/websrvmng -u --vhost-name=<domain name>   ]

or rebuild all via :

#/usr/local/psa/admin/sbin/websrvmng -a

#service httpd reload

View SSL cert from backend

openssl x509 -in /etc/ssl/certs/DOMAIN.crt -text -noout

phpmyadmin upload limitation

To increase the phpmyadmin upload limitation in cpanel servers you can edit the php.ini file mentioned below :

vi /usr/local/cpanel/3rdparty/etc/phpmyadmin/php.ini.

upload_max_filesize = 100M

post_max_size = 100M

Even if you edit the main php.ini file it wont work in this case.

Cpanel >> phpmyadmin may not reflect the change, if so go to

WHM >> tweak settings >> cPanel PHP max POST size >> and increase the limit.

or

Increase WHM >> Tweak Settings >> cPanel PHP max upload size