Bash's getopts is really frustrating to work with, so I made a helper that simplifies it to just a line or two

• shflags

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  shFlags is a port of the Google gflags library for Unix shell.

If getopts isn't doing it for you, there are already existing libraries to assist. Kate Ward's shflags and Matěj Týč's argbash are a couple of the better established/known ones. Although there are others e.g.

• argbash

  13 1,359 0.0 M4

  Bash argument parsing code generator

If getopts isn't doing it for you, there are already existing libraries to assist. Kate Ward's shflags and Matěj Týč's argbash are a couple of the better established/known ones. Although there are others e.g.

• InfluxDB

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• argparse-bash

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  Use python's argparse module in shell scripts

• bash-argsparse

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  An high level argument parsing library for bash

• cmdarg

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  A bash library to make argument parsing far less troublesome

• bash_opts

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  SImple Bash options parser

• ShellCheck

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  ShellCheck, a static analysis tool for shell scripts

Similarly, conflating arrays and strings is a recipe for confusion. Just because you can obfuscate accessing the zero-th index of an array doesn't mean you should. ShellCheck would flag that too.

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