replacing text in a bunch of files matching a certain pattern

Replace comes with mysql. It's a handy tool for sed/awk n00bs. This one I used to change some static paths while excluding all .svn folders and logfiles.

~$ replace '/var/www/mydir' '/var/www/newdir/' -- `grep --exclude-dir=.svn --exclude=*.log -clr "/var/www/mydir" ./*`

Of course there are other/better ways to accomplish this, look at this
http://www.brunolinux.com/02-The_Terminal/Find_and%20Replace_with_Sed.html

page up / page down bash

add these lines to your /etc/inputrc to search backwards through history. It searches on the string already typef

"\e[5~": history-search-backward
"\e[6~": history-search-forward

example post commit hook

Sample script for a conditional post-commit hook in bash. This post-commit hook updates a local copy (www directory) to the latest revision when files are changed within a certain directory.

#!/bin/bash
umask 0002

REPOS=$1
REV=$2
MATCH=`/usr/bin/svnlook -r $REV dirs-changed $REPOS | /bin/grep -c "just a string"`

if [ $MATCH -gt 0 ];then
/usr/bin/svn update /var/www/projects/mysite
fi