Free bash script software for linux

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.

Archive sort is a bash script that sorts directories into manageable 4.4GB directories for the purpose of archiving onto DVDs.

It is useful if you have several tens or hundreds of GBs of data to archive. It can also be configured to sort into 700MB directories for archiving onto CDs.

Usage: ./archive-sort [-h] [-s SIZE] [-t] [-v] SOURCE DEST

Archive files from directory DEST to new directory SOURCE in 4.4GB chunks,
or any SIZE specified by the user.

This script has not been tested extensively, so it is recommended that you make a copy of the directory you want to archive, then run the script on that directory. Always use the -t (test) option first and carefully read the output before using the script.

Optional arguments.

-h Print this help message.
-s Size of the archive media (default 4.4 GB)
-t Test run with verbose messages.
-v Verbose

Examples:

First cd to directory containing directories to be archived:

cd /home/user/archive
archive-sort . ../disc01

This is useful if you have several large directories under /home/user/archive, but no files. The archive directory will not be included in disc01.

If you have a directory full of lots of files, then cd to the parent directory of the directory that needs to be archived:

cd /home/user
archive-sort archive disc01

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".

Bash Port Knocking is a set of scripts that use standard Linux tools to acheive a port knocking system. A Web page is used to open ports, and an email is sent every time the port knocking sequence is successfully made.
Main features:
- Uses custom scripts to begin firewall and ipmasquerade for multiple connections. This can be used as a gateway for ethernet provided Internet Connectivity in addition to supplying port knocking services.
- This script creates a web page that can be used for port knocking. This page can be used locally if the browser is using a public/anonymous proxy.
- This scripts emails the above created browser page to a specified email recipient each time the port knock sequence is successfully acheived.
- This script logs successful port knocks but denies knocks that hit a port designed in the initial scripts. This allows the script to be closed automatically if someone is hitting your computer repeatedly trying to automatically open the ports and allows you to close the ports if youve completed a log in or other desired action.
- In its current state it has run successfully for quite some time and been tested repeatedly with both anonymous proxy and remotely by the author for opening ssh.
- It allows the user to control the depth of the logs searched to function in a very low usage enviornment or a very high use enviornment as desired.
- It sorts the knocks by knocking address to prevent possible denial of service.

libbash is a tool that enables bash dynamic-like shared libraries.
libbash library does this by managing bash scripts that contain functions you may want to use in various scripts.
Enhancements:
- getopts.sh: The last getopts change seem to disable the ability to use `-e, `-n and `-E, being valid `echo parameters. Fixed.

Bash Blogger is a small, bash-powered, weblog engine. Bashblogger generates valid, semantic, XHTML 1.1 webpages styled with a single CSS for layout and appearance without relying on popular, server-side scripting languages (i.e. Perl, Python, PHP, ASP, SSI, etc.).
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:
- When I change the name of an article and rebuild the site the name change only changes in the bash blogger menu. The index/article etc ... still list the original title. FIXED
- If you attempt to delete an article and fail to confirm with Y/n (just press enter) bblog exits instead of returning to previous menu. FIXED