quick-bash-program.sh

#!/bin/bash

##################
NUM_ARGS=1

RED='\033[0;31m'
YELLOW='\033[0;33m'
NC='\033[0m' # No Color
##################

# Check for correct number of arguments
if [ "$#" -ne $NUM_ARGS ]; then
    echo "[-] Usage: ./quick-bash-program.sh <arg0>"
    exit 1
fi

# Case Switch on First Arg
case $1 in
    'case1' )
        echo -e "${RED}Case1 hit${NC}"  ;;
    'case2' )
        echo -e "${YELLOW}Case2 hit${NC}"  ;;
      * )
      echo "No Case hit. Exiting,"
      exit 1
      ;;
esac

# Ask for user confirmation
read -p "[+] Ask a Question here. Are you sure? (Y) " -n 1 -r
echo

# If (Y) from user.
if [[ $REPLY =~ ^[Yy]$ ]]
then
  echo "TODO: Put actual program here."
else
  echo "[-] Program Canceled"
fi