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Home/ Questions/Q 860437
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Editorial Team
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Editorial Team
Asked: May 15, 20262026-05-15T08:49:07+00:00 2026-05-15T08:49:07+00:00

How can I check if a variable is empty in Bash?

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How can I check if a variable is empty in Bash?

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  1. Editorial Team
    Editorial Team
    2026-05-15T08:49:08+00:00Added an answer on May 15, 2026 at 8:49 am

    In Bash at least the following command tests if $var is empty:

    if [[ -z "$var" ]]; then
       # $var is empty, do what you want
    fi
    

    The command man test is your friend.

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