You can use the
!$ to reduce repetition when using the command line:
$ echo ping ping $ echo !$ ping
You can also build upon the repetition
$ echo !$ pong ping pong $ echo !$, a great game pong, a great game
Notice that in the last example we did not get
ping pong, a great game because the last argument passed to the previous command was
pong, we can avoid issue like this by adding quotes. Continuing with the example, our last argument was
$ echo "it is !$ time" it is game time $ echo "hooray, !$!" hooray, it is game time!
Found a mistake? Have a question or improvement idea? Let me know.
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