Bang (!) Commands

Hint in some shells you can hit space after the bang command and the command in full will populate

Befehle

!!: Run the previous command. sudo !! is very helpful

!:0: The first word of the last command

!$: The last word of the previous command. Example, mkdir /tmp/foo , then run cd !$ to change directory to the one you've just created

!foo: Run the previous command starting with foo

!foo:p: Print the previous command starting with foo

!!:s/foo/bar: Substitute foo with bar within the previous command

^foo^bar: Same as above, runs the previous command replacing foo with bar

!comm:s/foo/bar : This will search for commands starting with comm, replace foo with bar and execute the command. Can be appended with :p to print out the command before running

!n: Will run command n in the history, replace with whatever number you want from the output of the history command. !1 will run the first command. !-1 will run the previous command, same as !!

$_: Variable for the last argument in the previous command.

$(): Will run whatever is in the () as a subshell and return the result before running the rest of the command

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