Writing Safe Shell Scripts
Writing shell scripts leaves a lot of room to make mistakes, in ways that will cause your scripts to break on certain input, or (if some input is untrusted) open up security vulnerabilities. Here are some tips on how to make your shell scripts safer. Don't The simplest step is to avoid using shell at all. Many higher-level languages are both easier to write the code in in the first place, and avoi
Bash Strict Mode
Use Bash Strict Mode (Unless You Love Debugging) Let's start with the punchline. Your bash scripts will be more robust, reliable and maintainable if you start them like this: 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 prod
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