Linux Command Du Jour: time
Stephen Turner · 2009
I briefly mentioned "time" in the previously posted Linux command line cheat sheet, but I can't overstate its utility especially for ACCRE/Vampire users. The time command does exactly what it sounds like: it times exactly how long it takes to run anything at the command line. And it couldn't be easier to use. Just type the word "time" preceding what you would normally type in at the command line.