ce

#!/bin/sh
# Colourising echo output

usage(){
  cat <<-EOF
Usage: ce {colour} message

colour list:
EOF
  echo "-r|--red: \033[31mRed\033[0m"
  echo "-g|--green: \033[32mGreen\033[0m"
  echo "-y|--yellow: \033[33mYellow\033[0m"
  echo "-b|--blue: \033[34mBlue\033[0m"
  echo "-m|--magenta: \033[35mMagenta\033[0m"
  echo "-c|--cyan: \033[36mCyan\033[0m"
  echo "-w|--white: \033[37mWhite\033[0m"
  exit 1
}

colour_echo(){
  case $1 in
    -r|--red)
      shift
      echo "\033[31m$@\033[0m"
      ;;
    -g|--green)
      shift
      echo "\033[32m$@\033[0m"
      ;;
    -y|--yellow)
      shift
      echo "\033[33m$@\033[0m"
      ;;
    -b|--blue)
      shift
      echo "\033[34m$@\033[0m"
      ;;
    -m|--magenta)
      shift
      echo "\033[35m$@\033[0m"
      ;;
    -c|--cyan)
      shift
      echo "\033[36m$@\033[0m"
      ;;
    -w|--white)
      shift
      echo "\033[37m$@\033[0m"
      ;;
    *)
      echo "No such argument"
      usage
      ;;
    esac
}

if [ $# -lt 2 ]; then
  echo "Invalid argument."
  usage
else
  colour_echo "$@"
fi