Bash snippets

confirm.sh

# this function will ask for confirmation
confirm() {
  while true; do
    read -p "$1 (y/N)? " choice
    case "$choice" in 
      y|Y ) return 0;;
      n|N ) return 1;;
      "" ) return 1;;
      * ) echo "Invalid choice. Please specify \"y\" or \"n\".";;
    esac
  done
}

run-as-root.sh

# run as root only
root_check() {
  if [[ "$(id -u)" -ne 0 || $(ps -o comm= -p $PPID) == "sudo" ]]; then
    clear
    msg_error "Please run this script as root."
    echo -e "\nExiting..."
    sleep 2
    exit
  fi
}

spinner.sh

# this function displays a spinner
spinner() {
  local frames=('⠋' '⠙' '⠹' '⠸' '⠼' '⠴' '⠦' '⠧' '⠇' '⠏')
  local spin_i=0
  local interval=0.1
  printf "\e[?25l"

  local color="${YWB}"

  while true; do
    printf "\r ${color}%s${CL}" "${frames[spin_i]}"
    spin_i=$(( (spin_i + 1) % ${#frames[@]} ))
    sleep "$interval"
  done
}