I once had a cron job that was supposed to send a “good morning” digest at 7 AM. It went out at 12:30 AM for two weeks before anyone complained. The server was in UTC. The cron line said 0 …
You wrote a small Python script that does something useful — pulls down currency rates, scrapes a forecast, syncs a folder, posts a daily reminder. You want it to run every 15 minutes on your Mac. You read the previous …
You have a backup script. You add it to /etc/crontab. It runs on schedule for a year. Then one day it stops, because the box was suspended for ten minutes during the run window and cron’s “minute X of …
You write a Python script that needs to run every fifteen minutes on your Mac. You add a line to crontab -e, save, walk away. Two days later you check and notice it never ran. The cron file is …