Free bash scripting software for linux

Arena Scripting Language is a light-weight scripting language. The language uses a syntax and library similar to that of ANSI C, but adds automatic memory management and runtime polymorphism on top of that.
Main features:
- syntax similar to ANSI C
- standard library similar to ANSI C
- automatic memory management
- runtime polymorphism
- support for exceptions
- support for anonymous functions
Enhancements:
- This release changes the system() library function to return the raw exit status as given by the operating system.

IPv6 FireWall script is a firewall based on ip6tables.

firewall6.sh 122 lines

#!/bin/bash

# Basic IPv6 FireWall script by Dennis Kruyt (dennis@klingon.nl)
#
# Sun Jan 5 18:26:28 2003 - DK

#debug
#set -x

cd /opt/scripts/firewall

source ./config6
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11

# change to script directory
cd ${SCRIPTSDIR}

SCRIPT=${SCRIPTSDIR}/firewall6.sh

case "$1" in
flush)
echo -e "Starting Firewall:"
${IPTABLE6} -F >> /dev/null 2>&1
${IPTABLE6} -X >> /dev/null 2>&1
echo -e "Setting defaults op ACCEPT!"
echo -e "ALERT: no firewall rules active"
#
${IPTABLE6} -P INPUT ACCEPT
${IPTABLE6} -P OUTPUT ACCEPT
${IPTABLE6} -P FORWARD ACCEPT
;;
start|reload)
echo -n "Starting Firewall: "
# paging!
#

# create a backup
TIME=`date +%s`
tar -czf /opt/backups/firewall/firewall.${TIME}.tar.gz /opt/scripts/firewall

# sending mail
mail email@address.com -s "Firewall - (re)started" < $0

# wait
sleep 1

# kerneloptions
echo -n "Loading Kernel options.."
./kernel_options6.sh

echo -n "Flushing and deleting all chains.."
${IPTABLE6} -F >> /dev/null 2>&1
${IPTABLE6} -X >> /dev/null 2>&1

# default policy
echo -n "Setting default policy DROP.."
${IPTABLE6} -P INPUT DROP
${IPTABLE6} -P OUTPUT DROP
${IPTABLE6} -P FORWARD DROP

# ?????????????
#${IPTABLE} -F -t mangle
#${IPTABLE} -t mangle -X

echo -e "Loading chains.."
# create chain blacklist
${IPTABLE6} --new blacklist
#And drop the evil ones
for i in $BLACKLIST6;do
${IPTABLE6} -A blacklist --src $i -j DROP
done

#icmp chain
${IPTABLE6} --new icmprules
${IPTABLE6} -A icmprules -p icmpv6 -j ACCEPT

# create out chain
${IPTABLE6} --new out
#localhost to localhost
${IPTABLE6} -A out --src $LOCALHOST6 --dst $LOCALHOST6 -j ACCEPT
# for now accept all outgoing IPv6 traffic
${IPTABLE6} -A out --src $SIXXS --dst $ANY6 -j ACCEPT

# create in chain
${IPTABLE6} --new in
#localhost to localhost
${IPTABLE6} -A in --src $LOCALHOST6 --dst $LOCALHOST6 -j ACCEPT
# for now accept all incomming IPv6 traffic
${IPTABLE6} -A in --dst $SIXXS --src $ANY6 -j ACCEPT

#All that are in trusted may ssh
for i in $THRUSTED6;do
${IPTABLE6} -A in -p tcp --dst $SIXXS --dport 22 --src $i -j ACCEPT
done

# jump to all ipv6 chains
${IPTABLE6} -A INPUT -j blacklist
${IPTABLE6} -A OUTPUT -j blacklist
${IPTABLE6} -A FORWARD -j blacklist

${IPTABLE6} -A INPUT -j icmprules
${IPTABLE6} -A OUTPUT -j icmprules

${IPTABLE6} -A INPUT -j in
${IPTABLE6} -A OUTPUT -j out

;;
show)
echo -e "Rules in the firewall: ${CHAIN} n"
${IPTABLE6} -L -n
;;
*)
echo -e "Usage: ${SCRIPT} {flush|start|reload|show} n"
exit 1
;;
esac
exit 0

config6 12 lines

export IPTABLE6=/sbin/ip6tables

export SCRIPTSDIR=/opt/scripts/firewall

export EXT="eth0" # device
export SIXXS="3ffe:8114:1000::50f/127" # extern

export ANY6="::/0"
export LOCALHOST6="::1/128"

export THRUSTED6=""

export BLACKLIST6="3ffe:8114:2fff:1391::1"

kernel_options6.sh 7 lines

#!/bin/bash


# forwarding on
#echo "1" > /proc/sys/net/ipv6 blablabla

# Set some other IPv6 proc settings
#echo "1" > /proc/sys/net/ipv6 blablabla

Adams Ripsuite is a collection of quick and dirty Perl and bash scripts to help rip CDs and manage a music collection. The project rips music video DVDs and music CDs to files on your hard drive.

Reads track information in from a file on disk. Transcodes music files from and to a variety of formats using mplayer/lame/libogg. Specify an artist name to have their back catalogue copied to a folder.

Corrects the case of artist names/song titles for all music files/folders of music files. Adds artist information to files ripped with song title only. Does not support CDDB lookups for track information.

Requirements: Perl

Bash Blogger is a shell script that generates CSS styled XHTML 1.1 static Web pages.
Keeping up a website is basically just adding new content and a bunch of small repetitive tasks, e.g. updating the archives, updating the front page, etc. Bash scripting is good for automating repetitive tasks, so this works out pretty well.
Why program in the shell instead of (Perl, Python, etc)?
You may not have Perl, PHP or any number of the other scripting languages available on your hosting provider. Its a fairly safe bet that if you have shell access to your account, you can use Bash Blogger.
Enhancements:
- This release adds pingservices to notify technorati, blo.gs, etc. when a site is updated.
- It adds pingback support (autodiscovery and XML-RPC posting of pingback).
- User templates are now fully exposed.
- The default templates have been changed from XHTML 1.1 to HTML5 as per WHATWG recommendations.
- An ispell/aspell spellcheck menu option has been added.
- The welcome message code has been replaced with functions to make articles "sticky".

Intro to Bash Programming HOWTO is a bash programming tutorial.
The Intro to Bash Programming HOWTO is meant for newbies who wish to learn how to write shell scripts for bash, the GNU Boure-Again shell.
It contains several samples. It is very early in its development, but it is hoped that some people might find it useful.
Enhancements:
- New translations included and minor correcitons.

BashDiff is a patch against Bash that incorporates many useful features from Awk, Python, Zsh, Ksh, and others.
In the main core, it adds the following: new brace expansion {a..b}, new parameter expansion ${var|...}, new command substitution $(=...), extended for, while, and until loops, extended case statement, new try-block with integer exception, and new here document<<less