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aaron maxwell AddThis Button BEGIN AddThis Button END resume software writing web By Aaron Maxwell. Follow on Twitter Let's start with the punchline. Your bash scripts will be more robust, reliable and maintainable if you start them like this: #!/bin/bash set -eu set -o pipefail IFS = $'\n\t' I call this the unofficial bash strict mode . This causes bash to behave in a way that makes many classes of subtle bugs impossible. You'll spend much less time debugging, and also avoid having unexpected complications in production. There is a short-term downside: these settings make certain common bash idioms harder to work with. They all have simple workarounds, detailed below: jump to Issues & Solutions . But first, let's look at what these obscure lines actually do. These lines deliberately cause your script to fail. Wait, what? Believe me, this is a good thing. With these...