Question 418586 in Debian Question posted in
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Debian – How To Fix Unbound Variable?

I was running a script and got the error: ./run.sh: line 21: $1: unbound variable

Here it is

# Make sure we have something to run
**if [ "$1" = "" ]; then
**    log "Usage: $0 program [args]"
    exit 1
fi

Any help would be greatly appreciated!

I didn’t write the code and I have no experience, so I don’t even know where to start.

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2

Answers


  1. 0

    Remove set -u (short syntax) or set -o nounset (long syntax) from your not shown code.

    From help set:

    -u: Treat unset variables as an error when substituting.

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  2. 0

    If you didn’t write the script and have no intentions of fixing it, assume it’s not handling the errors in a great way and, in this case, just provide the argument expected (which perhaps you know)

    ./run.sh whatever
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