Advanced Bash Scripting Guide

July 9, 2011 at 11:36 pm · Filed under Programming

This guide really is a complete resource for understanding bash syntax; very easy to get around and understand.

http://tldp.org/LDP/abs/html/index.html

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Sending Mail From Bash Scripts with an Attachment

April 27, 2010 at 7:06 am · Filed under Programming

Here is a great little tut on getting started in Bash. I’d recommend it to anyone trying to hack their way into a shell script.

Here is a quick script for sending an email:

#!/bin/bash
 
# Subject of email
SUBJECT="Test email with attachment from a bash script"
 
# Where to send it
TO_ADDRESS="your@email.com"
 
# Where the attachment is
ATTACHMENT_FILE="/tmp/attachment.txt"
 
# For fun, let's put something into the attachment
echo "This goes into the file."  >  $ATTACHMENT_FILE
echo "This appends to the file." >> $ATTACHMENT_FILE
 
# send the message
/bin/mail -s "$SUBJECT" "$TO_ADDRESS" < $ATTACHMENT_FILE

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Starting services automatically in CentOS

August 3, 2008 at 1:24 pm · Filed under Programming

Had a service in CentOS 4 server that went down every time the box rebooted. Got tired of starting it manually so I had to go find the command to start it automagically.

Surprisingly, it has nothing to do with “service”, which is how you start/stop it manually. It has the very unintuitive command “chkconfig” to make it start on boot. What a choice: chckconfig!

Oh well, here it is:

chkconfig --add httpd
chkconfig httpd on

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Finding group/world writable files and directories in Linux

November 26, 2007 at 3:30 am · Filed under Programming

find / -type f \( -perm -2 -o -perm -20 \) -exec ls -lg {} \;

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CVS tunnel via CLI SSH

May 4, 2007 at 6:55 pm · Filed under Programming

/usr/bin/ssh -v -a -L 2401:localhost:2401  cvsnobody@ns2.cyterm.com

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