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Editorial Team
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Asked: 2026-05-18T01:39:44+00:00

Is there a way to create a temporary one-time only cron job from the

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Is there a way to create a temporary one-time only cron job from the command line? I’d like to have an egg-timer like function to open a terminal and do:

notify "time is up" 30

which would simply run this after 30 minutes:

zenity --info --text="time is up"

It seems easy enough for me to create, but I’m having a hard time believing no one has created something similar. Searching Ubuntu’s repository for timing packages doesn’t show anything. Has this been done before?

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1 Answer

  1. Editorial Team

    If you know that your $DISPLAY will be the same, you can do:

    echo "DISPLAY=$DISPLAY zenity --info --text=\"time is up\"" | at now + 30 minutes

    Providing the environment variable in this way will make it available to zenity when it’s run.

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