Ooo! Ooo!

Here's a handy little thing:

find - finds files and directories on a linux system

eg
Code:
find / -name boinc-client
the form is: the command, then the starting directory (the search starts here and can go deeper but not above this directory. can be anything, in this case the search would start in the root directory), the -name signifies that the thing it's looking for is named "boinc-client"

The command is actually FAR more powerful than this example shows, but that's what man pages are for