Making a Backup Reminder Script

“I like to back up the data on my laptop computer as often as
possible, just in case I have trouble with it. I have some large
files on the laptop that prevent me from scheduling an Internet
backup to my home machine, so I have written a script that reminds
me to periodically plug in an external USB drive; then upon
clicking continue, the reminder script runs my custom backup

“I use the at scheduling daemon to schedule the backup
reminders, and xdialog to present a graphical interface for the
reminders. The script presents a GUI that prompts you to prepare
for your backup (plug in your USB drive, bring up your network
interface, etc.)…”