I use the command line a lot. I'm sure many of you do, too. I find myself often piping things between processes: $ cat seancoates.com-access_log \ > | awk {'print $1'} \ > | sort \ > | uniq \ > | wc -l 627 $ # unique IPs One particularly useful tool on my Mac is the pbcopy utility, which takes standard input and puts it on the pasteboard (this is known as the "clipboard" on some other systems). It