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Retrieve Back Command Been Enter
August 31st, 2006 liewsheng Posted in alias, history | Hits: 7936 |
Everytime you enter a command in shell. It will be store it a file for later use, so you can retrieve back the command later. History is use to show all the pass command you have enter in the shell, but history only shown a limited number which have been set in a configuration file:
historythe output will be something like this:
494 vim /var/log/faillog
495 cd ..
496 ls
497 htop
498 top
499 htop
500 unameYou may wonder how you can re-enter back the command listed above, actually it is simple. For example if you want to enter back the command number 496, you can just enter:
!496the ‘ls’ command will be used. How about the previous command which start with ‘vim’, you can simply enter
!vimand so following command will be used
vim /var/log/faillogor you can using
history | grep vimand the output will be
vim /var/log/faillogso usually I add these to my aliases file:
alias hg='history | grep'next time i just using
hg vimto search for the command which have the ‘vim’ word.
February 5th, 2009 at 1:47 am
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