Kcrontab < IT

IT Web>UsingAFS>Kcrontab (2012-06-29, AndrewPickford) (raw view)
---+ kcrontab

kcrontab is the client for the PPE group's kcrond daemon. This daemon schedules periodic commands on remote hosts for users as managed by the kcrontab command.

The kcrontab & kcrond code is a modified version of the DESY k5crond code to work with MIT kerberos.

---+++ Usage

<code> kcrontab {-l|-e} [-d] </code>

---+++ Description
kcrontab manages a users crontab on the kcrond daemon server. A kerberos ticket (usually automatically obtained on login to a machine) is required to execute kcrontab.

kcrontab requires either an <code>-l</code> or <code>-e</code> argument to either list or edit a user's crontab.

---+++

The crontab file consists of:

   * comment lines, starting with <code>#</code>.
   * The <code>REXEC=</code> line which is required and should not in normal cases be changed.
   * The <code>MAILTO=</code> line which can be uncommented to specify an output email address
   * crontab entry lines.

A crontab entry line has the form:

<code>{Minute} {Hour} {Weekday} {Day} {Month} {Host} {Command}</code>

Weekday is a number, starting from 1 for Monday to 7 for Sunday. A star represents every. e.g.

<code>1 2 * * * * host.physics.gla.ac.uk ls ~/private</code>

Would execute "ls ~/private" as the user who created the crontab on the machine host.physics.gla.ac.uk at 1 minute past 2 am every day. 


-- Main.AndrewPickford - 2012-06-29
Topic revision: r1 - 2012-06-29 - AndrewPickford