Useful Commands

OS X

Stop Spotlight from indexing certain directories

sudo mdutil -i off /path/to/directory

Find

Match file name and execute command

# Find files which contain the word 'swell'
find . -type f -exec grep -l "swell" {} \;
# and execute a command on them
find . -type f -exec grep -l "swell" {} \; -exec rm {} \;