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Editorial Team
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Asked: 2026-05-15T18:54:55+00:00

How can one loop a command/program in a Unix shell without writing the loop

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How can one loop a command/program in a Unix shell without writing the loop into a script or other application.

For example, I wrote a script that outputs a light sensor value but I’m still testing it right now so I want it run it in a loop by running the executable repeatedly.

Maybe I’d also like to just run “ls” or “df” in a loop. I know I can do this easily in a few lines of bash code, but being able to type a command in the terminal for any given set of command would be just as useful to me.

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1 Answer

  1. Editorial Team

    You can write the exact same loop you would write in a shell script by writing it in one line putting semicolons instead of returns, like in

    for NAME [in LIST ]; do COMMANDS; done

    At that point you could write a shell script called, for example, repeat that, given a command, runs it N times, by simpling changing COMMANDS with $1 .

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