Mac Terminal tip: pbcopy and pbpaste
Just found two helpful programs in OS X; pbcopy and pbpaste (man page). They let you write and read from the OS X clipboard and allow you do to things like:
$ cat file.txt | pbcopy
That's a lot faster than opening the file, selecting everything, and copying it!
$ pbpaste > example.css
Quicker than firing up emacs/TextMate/whatever.
Of course you can even do fancier things like:
$ tail -n 10 /var/log/messages | pbcopy