Find

From Kb

Look for and change permission of only directories:

find . -type d -exec chmod 755 {} \;
find . -type d -exec chmod a+x {} \;

Look for and change permission of only files:

find . -type f -exec chmod 644 {} \;

find ./ -name *.pdf -exec chmod 755 {} \;

find . -type d -user fileowner -exec chmod 0755 {} \;

find . -type f -name '*.htm*' -exec chmod 644 {} \;

Remove all SVN directories

find . -name ".svn" -type d -exec rm -rf {} \;

Example Source

Look for the string "com.apple.itunes" in files that end with ".plist":

sudo find / -name *.plist -exec grep -l 'com.apple.itunes' {} \;