Scripty Script

Interactive macOS Countdown Timer Bash Script

Written by

Geoff

in

,

This Bash script creates a countdown timer that either accepts the duration in seconds as a command-line argument or prompts the user for input. It displays the remaining time in the Terminal and sends a native macOS notification when the countdown completes.

Click to view script… 
#!/bin/bash
# Simple Countdown Timer for macOS with Interactive Input

# Check if a time (in seconds) was provided as an argument
if [ $# -eq 0 ]; then
    # Prompt the user for input if no argument is given
    read -p "Enter number of seconds for the countdown: " TIME_LEFT
else
    TIME_LEFT=$1
fi

# Validate that the input is a positive integer
if ! [[ $TIME_LEFT =~ ^[0-9]+$ ]] ; then
    echo "Error: Please enter a positive integer for seconds." >&2
    exit 1
fi

# Countdown loop
while [ $TIME_LEFT -gt 0 ]; do
    echo -ne "Time left: ${TIME_LEFT} second(s) \r"
    sleep 1
    ((TIME_LEFT--))
done

# Move to a new line after the countdown
echo -e "\nTime's up!"

# Display a macOS notification using osascript
osascript -e 'display notification "Countdown Complete!" with title "Timer"'

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