Clipboard/CLI Integration

In Cygwin:

$ getclip | sort -u
$ ls -al | putclip

In Mac OS X:

$ pbpaste | sort -u
$ ls -al | pbcopy

In generic X11 (using xclip):

$ xclip -o | sort -u
$ ls -al | xclip

(note that X has a somewhat funky notion of what a "clipboard" actually is, so the above may require some tweaking depending on your desktop environment)