oracular (1) crontab.1.gz

Provided by: systemd-cron_2.4.1-1_amd64 bug

NAME
     crontab — maintain crontab files for individual users


SYNOPSIS
     crontab [-u user] [newtab]
     crontab -l [-u user]
     crontab -r [-i] [-u user]
     crontab -e [-u user]
     crontab -s
     crontab -t line
     crontab -T crontab


DESCRIPTION
     crontab lets users install, uninstall, view, and edit recurrent jobs in the crontab(5) format, as well as
     pre-view and convert them to systemd.timer(5) pairs.  root may also spy on who which users have installed
     crontabs.

     Each user may have their own crontab, but this can be limited by /etc/cron.allow to create an explicit
     allow-list or /etc/cron.deny to deny access to individual users.

     Crontabs are checked before installing — if they are found to be invalid, installation is aborted and a
     summary of errors is written to the standard error stream.


OPTIONS
     (by default)     replace the user's crontab from newtab (standard input stream if "-", the default).
     -l, --list       Copy user's crontab to the standard output stream, or error if there is none.
     -r, --remove     Remove user's crontab.
     -i, --ask        Output a confirmation prompt before doing so.
     -e, --edit       Let user edit crontab, install when they're done.
     -s, --show       List which users have a crontab installed.  Nonexistent users are warned about to the
                      standard error stream.  Only root can do this.
     -t, --translate  Validate and translate a crontab(5) line into a native systemd.timer(5) pair to the
                      standard output stream.
     -T, --test       Validate whether crontab is a valid crontab(5) file.

     -u, --user=user  Edit user's crontab instead of the currently-logged-in user's.  Only root can do this, and
                      they should be careful about using crontab without this option — the current user is
                      determined by $LOGNAME, $USER, $LNAME $USERNAME, and only then by the real UID!


FILES
     /etc/cron.allow           If exists, only users listed here (one username per line) can install their own
                               crontabs.  Otherwise, everyone can.
     /etc/cron.deny            Users listed here aren't allowed to install their own crontabs.
     /var/spool/cron/crontabs  Crontabs live here.


ENVIRONMENT
     EDITOR, VISUAL, editor, vim, nano, and mcedit are tried, in order, when using -e.


SEE ALSO
     crontab(5), systemd.cron(7) for a summary of the format and how to tweak installed cronjobs — systemctl
     edit cron-schedule.{timer|service}.


LIMITATIONS
     SELinux is not supported.