I am running the latest Ubuntu on my server VPS on linode and I get this error when installing cronkeep

Oh Snap!

at is not available on this system. CronKeep uses this slick command internally to run jobs independently from your web server, whenever you hit "Run". This means you could restart your web server and still have the process running in the background.

Here's the raw output from the command that may help you debug this further: sh: 1: at: not found

Is there a tool called at or is this something available on the C compiler?.


1 Answer 1


The at command (/usr/bin/at) is part of the equally named package at.

You can simply install it with this command:

sudo apt install at

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