On Thu, Jan 7, 2010 at 9:41 AM, Curt Lundgren <[email protected]> wrote: > If you do "!se" you'll execute the most recent command that starts with the > letters "se". I find I use this more than re-executing by number. > > Curt > > On Wed, Jan 6, 2010 at 6:41 PM, Perkins, Jerry <[email protected]> wrote: >> >> Dave, this is even new to me, so I am also sending it on to a couple >> others. >> >> Reuse your history >> >> After some time learning and experimenting at the command line, you'll >> find that you want to go back and repeat a command you executed at some >> point during the past. Luckily, Unix (and Cygwin) track every single command >> you ever type in a file called .history. Type the history command to see the >> last 100 commands you ran, which will be numbered, like this: >> >> penel...@scully ~ >> $ history >> .... >> 82 echo gift-ideas.txt >> 83 grep Mom gift-ideas.txt >> 84 man grep >> 85 ls | grep .txt >> 86 ls >> 87 ls | grep todo >> 88 ls | grep .txt >> 89 ls >> file-listing.txt >> 90 cat file-listing.txt >> 91 history >> >> >> Now, if you want to redo command number 87, let's say, you don't have to >> retype it. The "bang" (exclamation point) and the command number will get >> the job done. Just type !87 at the prompt, hit enter, and - in my case - ls >> | grep todo - will be re-executed. >> >> Use grep to pick out the command of interest from your history. For >> example, to see all the ls recipes you've used in the past, grep your >> history for ls, like so: >> >> penel...@scully ~ >> $ history | grep ls >> 11 ls >> 13 ls >> 14 cls >> 20 ls >> 21 ls >> 27 ls >> 46 man ls >> 47 ls -l >> 48 ls >> 49 man ls >> 50 ls -lh >> 51 ls >> ... >> >> >> Neat, huh?
I find myself using !! frequently. It calls the most recent command. My most common use is after running a command and getting an error that only root can do that. sudo !! Not only is it easier than (up arrow) (home) sudo, but visually it looks like the computer correctly interprets your exasperation. ;)
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