command The history command can be used to list Bash's log of the commands you have typed:
This log is called the "history". To access it type:
This will only list the last n commands. Type "history" (without options) to see the the entire history list.
You can also type !n to execute command number n. Use !! to execute the last command you typed.
!-n will execute the command n times before (ie. !-1 is equivalent to !!).
!string will execute the last command starting with that "string" and !?string? will execute the last command containing the word "string". For example:
Will re-run the command that you last typed starting with "cd".
" commandName !*" will execute the "commandName" with any arguments you used on your last command. This maybe useful if you make a spelling mistake, for example. If you typed:
emasc /home/fred/mywork.java /tmp/testme.java
In an attempt to execute emacs on the above two files this will obviously fail. So what you can do is type:
This will execute emacs with the arguments that you last typed on the command line. In other words this is equivalent to typing:
emacs /home/fred/mywork.java /tmp/testme.java
Use the CTRL-R key to perform a "reverse-i-search". For example, if you wanted to use the command you used the last time you used snort, you would type:
CTRL-R then type "snort".
What you will see in the console window is:
After you have typed what you are looking for, use the CTRL-R key combination to scroll backward through the history.
Use CTRL-R repeatedly to find every reference to the string you've entered. Once you've found the command you're looking for, use [Enter] to execute
Alternatively, using the right or left arrow keys will place the command on an actual command line so you can edit it.