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Editorial Team
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Asked: 2026-06-03T04:58:58+00:00

I see code like this: while :; do #commands done Is that the same

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I see code like this:

while :; do
    #commands
done

Is that the same as

while :
do
    #commands
done

And is that just an infinite loop?

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1 Answer

  1. Editorial Team

    : is a shell builtin Null command. You can type help : in the terminal:

    :: :
    Null command.

    No effect; the command does nothing.

    Exit Status:
    Always succeeds.

    It looks like /bin/true.

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