grep xxx@xxx.com /var/log/exim_mainlog | grep “<=” | awk {’print $3′} | wc -l

#!/bin/bash # mybackupadd – Add file to ~/.mybackup file, then backup and email all # file as tar.gz to your email a/c. # # Usage : ./mybackupadd ~/public_html/ # # Copyright (C) 2004 nixCraft project # Email : http://cyberciti.biz/fb/ # Date : Aug-2004 # ————————————————————————- # This program is free software; you can redistribute it [...]

#!/bin/bash loadavg=$(uptime | awk -F “.” ‘{ print $1 }’ | awk -F “:” ‘{ print $5 }’) if [ "$loadavg" -ge "10" ]; then pkill -9 httpd sleep 3 /scripts/restartsrv_httpd fi

#!/bin/bash # Shell to read source file and copy it to target file. If the file # is copied successfully then give message ‘File copied successfully’ # else give message ‘problem copying file’ # ————————————————————————- # Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/> # This script is licensed under GNU GPL version 2.0 or above # [...]

ps aux | head -1;ps aux –no-headers| sort -rn +3 | head Incoming search terms:ps aux | sort -n 3 | tail -10 (1)ps aux | sort -r -n 3 (1)

I admin ecom website and a lot of bogus traffic comes from countries that do not offer much in commercial value. How do I just configure Apache or iptables to just refuse connections to certain countries? You can block traffic at both Apache or iptables level. I recommend iptables to save some resources. First, you [...]

#!/bin/bash # A simple shell to build and install xcache Opcode Cache as module for # PHP under # CentOS, Fedora and RHEL / Redhat Enterprise Linux # servers. # —————————————————————————- # Written by Vivek Gite <http://www.cyberciti.biz/> # (c) 2008 nixCraft under GNU GPL v2.0+ # —————————————————————————- # Home page: http://www.hardened-php.net # Last updated: 15/June/2010 [...]

Simple bash script to monitor a webserver on different ports (here smtp, dns, http & https but it can be customized); I’m sure there are over 100 available programs doing this but I wanted something with small memory usage. Also, I only wanted to be notified once, notifications are received by SMS on my cell. [...]

#!/bin/bash # A shell script to build dnstop utility to displays various tables # of DNS traffic on your network including bind 9 server stats. # ————————————————————————- # Tested under CentOS / RHEL / Fedora Linux only. # ————————————————————————- # Copyright (c) 2008 nixCraft project <http://cyberciti.biz/fb/> # This script is licensed under GNU GPL version [...]

#!/bin/bash set -e # Use this script to copy shared (libs) files to nginx chrooted # jail server. This is tested on 64 bit Linux (Redhat and Friends only) # —————————————————————————- # Written by Vivek Gite <http://www.cyberciti.biz/> # (c) 2006 nixCraft under GNU GPL v2.0+ # Last updated on: Apr/06/2010 by Vivek Gite # —————————————————————————- [...]