Template that can be used for creating a bash script with named parameters and help instructions

bash-script-template.sh

#!/bin/bash

# Initialize argument values
follow=""
tail=""
version="1.0.0"

help() {
    echo "(Version: ${version}) Usage: $0 [ARGUMENTS]"
    echo
    echo "Add description of the script functions here."
    echo
    echo "Argument(s)       Description"
    echo "-----------------------------------------------"
    echo "-h | --help       Show these help instructions."
    echo
    echo "-f | --follow     My description."
    echo "-t | --tail       My description."
    echo
    echo "Created by Andreas Christodoulou<andreas22[@]gmail[.]com> at 2020-12-19"
    exit 0
}

if [[ "$#" -eq 0 ]]; then
  help
fi

# Set argument values

while [[ "$#" -gt 0 ]]
  do
    case $1 in
      -f|--follow)
        follow=$2
        ;;
      -t|--tail)
        tail=$2
        ;;
      -h|--help)
	      help
        ;;
    esac
    shift
done

# Run

echo "Follow: $follow"
echo "Tail: $tail"