adding a bash getopts long template

diff --git a/bash/getopts-long-template.sh b/bash/getopts-long-template.sh
new file mode 100644 (file)
index 0000000..1f752a3
--- /dev/null
+++ b/bash/getopts-long-template.sh
@@ -0,0 +1,79 @@
+#!/bin/bash
+set -euo pipefail
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
+#
+# You should have received a copy of the
+# COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+# along with this program.  If not, see http://www.sun.com/cddl/cddl.html
+#
+# 2023 http://www.bananas-playground.net
+
+# getopts long example and template
+# more detail can be found here https://www.shellscript.sh/examples/getopt/
+
+
+Help() {
+       echo
+       echo "Syntax: `basename "$0"` -n [-h|v|V]"
+       echo "Available ptions are:"
+       echo "-n  | --name Input your name."
+       echo "[-h | --help Print this Help and exit.]"
+       echo "[-v | --verbose Verbose mode.]"
+       echo "[-V | --version Print software version and exit.]"
+       echo
+}
+
+VERBOSE="false"
+NAME=""
+
+VALID_ARGS=$(getopt -o 'vVhn:' --long verbose,version,help,name: -- "$@")
+if [[ $? -ne 0 ]]; then
+    exit 1;
+fi
+
+eval set -- "$VALID_ARGS"
+while [ : ]; do
+       case "$1" in
+               -n | --name)
+                       NAME="$2"
+                       shift 2 
+                       ;;
+
+               -v | --verbose) 
+                       VERBOSE="true"
+                       shift 
+                       ;;
+
+               -V | --version)
+                       echo "Version 1.0" 
+                       shift
+                       exit ;;
+   
+               -h | --help)
+                       Help
+                       exit 0
+                       ;;
+               --) shift
+                       break
+                       ;;
+               *)  echo "Unexpected option: $1"
+                       Help 
+                       exit
+                       ;;
+       esac
+done
+shift "$(($OPTIND -1))"
+
+
+if [[ -z "$NAME" ]] ; then
+       echo 'Missing option -n | --name' >&2
+       exit 1
+fi
+
+if [[ "${VERBOSE}" == "true" ]] ; then
+       echo "DEBUG: Provided ${NAME} for option n"
+fi
+
+echo "Your are: ${NAME}"