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i am having a bit of an issue with the below bash script that it always has the error ./check2.sh: 2: Syntax error: "(" unexpected , i have tried every which way to try and fix this i am probably missing something simple. can anyone give me some guidance 

# array of dependencies
array=("convert" "ffmpeg");
for i in "${array[@]}"
do
    command -v $i >/dev/null 2>&1 || { 
        echo >&2 "$i required"; 
        exit 1; 
    }
done
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You probably need to add a shebang to make sure the code executes in bash and not the default shell. At the start of the script there should be the line:

#!/bin/bash

This is because your array syntax is only supported in Bash, not in more basic shells which are often used by default for performance reasons.

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Note that this is a very common problem; such questions should be closed as duplicates rather than answered, as described in the "Answer Well-Asked Questions" section of stackoverflow.com/help/how-to-answer