Display an intrusive prompt to drink water every 15min using a cron job

drink_water_cron.sh

# - OSX / MacOS -
# Cron Job
*/15 * * * * osascript -e 'tell application (path to frontmost application as text) to display dialog "Drink some water. :]" buttons {"OK"}'
# Automatically add cron job to existing cron jobs
(crontab -l ; echo "*/15 * * * * osascript -e 'tell application (path to frontmost application as text) to display dialog \"Drink some water. :]\" buttons {\"OK\"}'") | crontab -
# as su
(sudo crontab -l ; echo "*/15 * * * * osascript -e 'tell application (path to frontmost application as text) to display dialog \"Drink some water. :]\" buttons {\"OK\"}'") | sudo crontab -

# - Fedora Linux -
# Cron Job
*/15 * * * * zenity --info --text "Have a sip of water (:"
# Automatically add cron job to existing cron jobs
(crontab -l ; echo "*/15 * * * * zenity --info --text \"Have a sip of water (:\"") | crontab -
# as su
(sudo crontab -l ; echo "*/15 * * * * zenity --info --text \"Have a sip of water (:\"") | sudo crontab -