Command line flags for bash

gistfile1.txt

#!/bin/bash

set -e

command="$1"

eka() {
    local use_x_flag=false
    while getopts ":x:" o; do
	case "${o}" in
	    x)
		xarg=${OPTARG}
		echo "$xarg"
		use_x_flag=true
		;;
	    *)
		echo "invalid param for eka"
		exit 1
		;;
	esac
    done
    echo "x flag $use_x_flag"
    if $use_x_flag ; then
	echo "X FLAG"
    else
	echo "NO X FLAG"
    fi
}

toka() {
    echo "toka"
    local yflag=false
    while getopts ":y" o; do
	case "${o}" in
	    y)
		yflag=true
		;;
	    *)
		echo "invalid param for toka"
		exit 1
		;;
	esac
    done
    echo "yflag $yflag"
    if $yflag ; then
	echo "Y FLAG"
    else
	echo "NO Y FLAG"
    fi
}

case "$command" in
    "eka" )
	eka "${@:2}"
	;;
    "toka" )
	toka "${@:2}"
	;;
    *)
	echo "Unknown command $command"
	;;
esac