samuelyao314 · July 17, 2020 11:49
diff --git a/samizdat-shell-help.bash b/samizdat-shell-help.bash
 #!/bin/bash
 ###
 ### my-script — does one thing well
 ###
 ### Usage:
 ###   my-script <input> <output>
 ###
 ### Options:
 ###   <input>   Input file to read.
 ###   <output>  Output file to write. Use '-' for stdout.
 ###   -h        Show this message.

 help() {
    sed -rn 's/^### ?//;T;p' "$0"
 }

 if [[ $# == 0 ]] || [[ "$1" == "-h" ]]; then
    help
    exit 1
 fi

 echo Hello World
	#!/bin/bash
	###
	### my-script — does one thing well
	###
	### Usage:
	### my-script <input> <output>
	###
	### Options:
	### <input> Input file to read.
	### <output> Output file to write. Use '-' for stdout.
	### -h Show this message.

	help() {
	sed -rn 's/^### ?//;T;p' "$0"
	}

	if [[ $# == 0 ]] \|\| [[ "$1" == "-h" ]]; then
	help
	exit 1
	fi

	echo Hello World