Some examples for the linux find syntax:
If you type "locate xyz" (which, in effect, returns any file containing xyz in the name) and it says "Unable to find database" (or some error like that - simply type "updatedb &" at the prompt and it will refresh your file system database file. Better yet - set it to run as a cron job, niced, every 12 hours or 24 hours.
tags: search, syntax, find, command, whereis, locate