In Ubuntu, cron is multi user, and every user in the system could schedule any job using cron with simple command "crontab -e". This command will invoke the default text editor to add/remove new job.
Below is one example in which I want to ask my computer to reindex my hard disk content using recoll (via "recollindex" command line) every 2:00AM every day, and log every single message to "/tmp/cron-recollindex" :
crontab -e
0 2 * * * recollindex > /tmp/cron-recollindex 2>&1
In Ubuntu crontab -e will invoke nano. To change it with your favorite editor, use the following command (just replace "vi" with your favorite one) :
EDITOR=vi && crontab -eIf you want a permanent changes on the editor, put the following line inside your .bashrc file :
export EDITOR=vi
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