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December 11th, 2007

Bash Tip

written by Steven Bristol

Try this:


> ls -al
drwxr-xr-x  23 steve  steve    782 Dec  9 00:27 .
drwxr-xr-x  39 steve  steve   1326 Dec 11 21:21 
drwxr-xr-x  11 steve  steve    374 Dec 11 18:16 .svn
.......
> !!
drwxr-xr-x  23 steve  steve    782 Dec  9 00:27 .
drwxr-xr-x  39 steve  steve   1326 Dec 11 21:21 
drwxr-xr-x  11 steve  steve    374 Dec 11 18:16 .svn
.......
> ls -al
drwxr-xr-x  23 steve  steve    782 Dec  9 00:27 .
drwxr-xr-x  39 steve  steve   1326 Dec 11 21:21 
drwxr-xr-x  11 steve  steve    374 Dec 11 18:16 .svn
.......
> ls !$
drwxr-xr-x  23 steve  steve    782 Dec  9 00:27 .
drwxr-xr-x  39 steve  steve   1326 Dec 11 21:21 
drwxr-xr-x  11 steve  steve    374 Dec 11 18:16 .svn
.......
So:
  1. !! reruns the last command (very useful if you forget to put sudo in front: > sudo !!).
  2. !$ gets the first param of the last command.

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