this post was submitted on 22 Sep 2025
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Check two conditions in bash ? [solved] (programming.dev)
submitted 6 days ago* (last edited 5 days ago) by Rick_C137@programming.dev to c/linux@lemmy.ml
16 comments fedilink hide all child comments
 

Hi,

I trying to test two condition together (AND) under bash but it's not working...

The goal is ti have True when two variables are either not set or empty (empty string)

I've tried

if [[ -n VARIABLE1 && -n VARIABLE2 ]]; then
    echo "OK"
fi

Here I get the "OK" no matter what .

Thanks.

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[–] Rick_C137@programming.dev 3 points 5 days ago* (last edited 5 days ago) (2 children)

Thank you all for yours input

What finally did work

if [[ -z VARIABLE1 && -z VARIABLE2 ]]; then
    echo "OK"
fi

If only Linux was using Python syntax that would be so much more intuitive...

[–] sping@lemmy.sdf.org 9 points 4 days ago

Linux does use Python syntax... in Python.

In Bash though, it uses Bash syntax.

[–] Farnsworth@lemmy.world 2 points 4 days ago* (last edited 4 days ago)

The variables need a dollar sign: $VARIABLE1

help test shows what -n and -z do.