From Electron Cloud
To change every directory to have ug+rwx and sticky:
find . -type d -print0 | xargs -0 chmod 1770
-print0 and -0 are to deal with spaces in the filenames.
For read/write but NOT execute on normal files:
find . -type f -print0 | xargs -0 chmod 0660
To delete old files (e.g. older than one day):
find . -mtime +1 -exec rm {} \;
To find files, links, etc. but NOT directories, and omit the leading ".":
find –not –type d | sed ‘s/.//’
Copy files in many subdirectories into a single subdirectory:
find . -name *.mp3 -print0 | xargs -0 -I '{}' mv '{}' the-one-folder
Find source files that were modified today (and a few more file types too):
alias src_mod_today='find . -type f -mtime -1 | grep -v "\.o$" | grep -v "\.so$" | grep -v moc_'