Install libschedule-at-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libschedule-at-perl
Description:
OS independent interface to the Unix 'at' command
Schedule::At is an Operating System-independent Perl interface to 'at', the Unix command that allows you to execute commands at a specified time. It can add new jobs to the queue, read current jobs and remove jobs.
Homepage: http://search.cpan.org/dist/Schedule-At/
Version: 1.15-1
Section: universe/perl