stopwatch

#!/bin/bash
# (c) 2020 Leif Sawyer
# License: GPL 3.0 (see https://github.com/akhepcat/)
# Permanent home:  https://github.com/akhepcat/Miscellaneous/
# Direct download: https://raw.githubusercontent.com/akhepcat/Miscellaneous/master/stopwatch
# 
PROG="${0##*/}"

trap cleanup SIGINT SIGTERM SIGKILL SIGQUIT SIGABRT SIGSTOP SIGSEGV

cleanup() {
	echo -e "\n\n"
	exit 0
}

usage() {
        echo "${PROG} [-cC]"
	echo "        -c  clears the screen"
	echo "        -C  pipe the output to CowSay"
        exit 1
}

while getopts ':cC' opt; do
  case $opt in
    c) CLEAR=1 ;
      ;;
    C) COW=1;
      ;;
    *) echo "Invalid option: -$OPTARG";
      usage;
      ;;
  esac
done

[[ 1 -eq ${CLEAR:-0} ]] && clear

while [ 1 ]
do
	if [ 0 -eq ${COW:-0} ]
	then
		printf "\rTime(HH:MM:SS) - %02d:%02d:%02d" ${HOURS:-0} ${MINS:-0} ${SECS:-0}
	else
		clear
		printf "Time(HH:MM:SS) - %02d:%02d:%02d" ${HOURS:-0} ${MINS:-0} ${SECS:-0} | cowsay
	fi

	if [ ${SECS:-0} -ge 59 ]
	then
		SECS=0
		if [ ${MINS:-0} -ge 59 ]
		then
			MINS=0
			HOURS=$(( $HOURS + 1 ))
		else
			MINS=$(( $MINS + 1 ))
		fi
	else
		SECS=$(( SECS + 1 ))
	fi

	sleep 1
done