Grepping in your subversion working copies
Grepping is in a lot of cases a pain when your dealing with subversion directories..
I'm sure this doesn't cover all possible greps, but this at least works for the simple ones..
#!/bin/sh grep $* | grep -v ".svn"
Call this script for example "svngrep", give it executable permissions (chmod +x svngrep) and place it in a directory thats in your PATH variable (/bin).
Now, use svngrep as you would normally use grep..
Update: The anonymous posters script is way better (the first comment)