shell script

Bind bash to a port

a simple perl script to bind bash to a port: #!/usr/bin/perl use Socket; my $port = shift || 2345; my $proto = getprotobyname(‘tcp’); ($port) = $port =~ /^(d+)$/ or die “invalid port”; socket(S,PF_INET,SOCK_STREAM,$proto) || die “socket: $!”; setsockopt(S,SOL_SOCKET,SO_REUSEADDR,pack(“l”,1)) || die “setsockopt: $!”; bind(S,sockaddr_in($port,INADDR_ANY)) || die “bind: $!”; listen(S,3) || die […]

Rename files and folders to lower case letters

Here’s a simple bash script that will help in renaming files and folders with uppper-case to lower-case letters. Make sure you have a backup and test it with a small batch. Also read the whole comments section below if you have spaces in your file names. #!/bin/bash # # Filename: […]

Shell Arithmetic

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Script for cropping down the domlogs

generic viagra for sale< Script for cropping down the domlogs #!/bin/bash for domain in /usr/local/apache/domlogs/*; do # Find the domain having more than 100 Mb log file size if [ 3000 -lt `du $domain | awk {‘print $1’} 2> /dev/null` ] cialis and surgery< then { echo $domain; echo< […]

Linux Iptables Just Block By Country

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 […]

Exim mail queue clear

To clear SPAMS and unwanted mails from the mail queue   exim -bp | awk ‘$6~”frozen” {print $3 }’ | xargs exim -Mrm grep -lr ‘nobody@’ /var/spool/exim/input/ | \sed -e ’s/^.*\/\([a-zA-Z0-9-]*\)-[DH]$/\1/g’ | xargs exim -Mrm grep -rl ‘From: Mail Delivery System’ /var/spool/exim/input/ | \sed -e ’s/^.*\/\([a-zA-Z0-9-]*\)-[DH]$/\1/g’ | xargs exim -Mrm […]

To kill Dead process

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AWK Array Script To Find File Maximum, Minimum and Total File Sizes

#!/bin/bash # Written by Vivek Gite <> # AWK to list total file size, minimum, maximum and other size using Arrays # ————————————————————————– # Copyright (C) 2007 nixCraft project <> # This script is licensed under GNU GPL version 2.0 or above # ————————————————————————- # This script is part of […]