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
Stop using tail -f (mostly)
Stop using tail -f (mostly) 12 Mar 2015 I still see a lot of people using tail -f to monitor files that are changing, mostly log files. If you are one of them, let me show you a better alternative: less +F The less documentation explains well what this +F is all about: Scroll forward, and keep trying to read when the end of file is reached. Normally this command would be used when already at the e
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docopt—language for description of command-line interfaces
Command-line interface description language docopt helps you: define the interface for your command-line app, and automatically generate a parser for it. docopt is based on conventions that have been used for decades in help messages and man pages for describing a program's interface. An interface description in docopt is such a help message, but formalized. Here is an example: Naval Fate. Usage:
Welcome to Click — Click Documentation (8.1.x)
Welcome to Click¶ Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as necessary. It’s the “Command Line Interface Creation Kitâ€. It’s highly configurable but comes with sensible defaults out of the box. It aims to make the process of writing command line tools quick and fun while also preventing any frustration caused by the inability
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