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Bash History

!$ - repeat last arg echo fee fi fo fum echo !$ => echo fum

!:n - repeat nth arg echo fee fi fo fum echo !:2 => echo fi

!:n-$ - range of args (especially 1-$) echo fee fi fo fum echo !:2-$ => echo fi fo fum

!-m:$ - repeat last arg from the 2nd most recent command echo fee fi fo fum ls echo !-2:$ => echo fum

!$:h - get parent folder of last arg ls /etc/systemd/journald.conf ls !$:h => ls /etc/systemd

!#:n - reference arg on current line cp ./important_stuff !#:1.bak => cp ./important_stuff ./important_stuff.bak

!!:gs/find/replace - global substitute on previous command

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