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25 lines
769 B
Markdown
25 lines
769 B
Markdown
# getopts
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> Parse shell options from arguments.
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> This command does not support longform options and thus using `getopt` is recommended instead.
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> More information: <https://www.gnu.org/software/bash/manual/bash.html#index-getopts>.
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- Check if an option is set:
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`getopts {{x}} {{opt}}; echo $opt`
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- Set an option to require an argument and check said argument:
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`getopts {{x}}: {{opt}}; echo $OPTARG`
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- Check for multiple options:
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`while getopts {{xyz}} {{opt}}; do case $opt in x) echo x is set;; y) echo y is set;; z) echo z is set;; esac; done`
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- Set `getopts` to silent mode and handle option errors:
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`while getopts :{{x:}} {{opt}}; do case $opt in x) ;; :) echo "Argument required";; ?) echo "Invalid argument" esac;; done`
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- Reset `getopts`:
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`OPTIND=1`
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