A little bit of history
Oct 20, 2012, 04:00 (1 Talkback[s])
(Other stories by Sandra Henry-Stocker)
Just about anyone who works on the command line of a Unix/Linux systems knows about history. Having the ability to repeat their most recent command by just typing !! or the most recent command that starts with a particular letter by typing something like !s saves them a lot of typing and a lot of typos. But these uses of the history feature of the shell only scratch the surface of what it can do for you.