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Debugging Techniques: Fix Scripts

Debug scripts. Find problems. Fix them. Techniques.

Here's the thing: Debugging finds problems. Learn techniques. Use them.

set -x​

#!/bin/bash
set -x
command

My take: set -x shows commands. Use for debugging.

bash -x​

bash -x script.sh

My take: bash -x runs with debugging. Use it.

echo Debugging​

echo "DEBUG: value is $value"

My take: echo shows values. Simple debugging.

Common Patterns​

Debug Function​

debug() {
    [ "$DEBUG" = "1" ] && echo "DEBUG: $*"
}

debug "Processing file: $file"

What's Next?​

Now that you understand debugging, you can fix scripts. Or review Error Handling to reinforce.

Personal note: Debugging seemed hard at first. Then I learned techniques. Now I debug easily. It's a skill. Learn it.