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head/usr.sbin/cron/cron/cron.8
| Show All 11 Lines | |||||
| .\" * | .\" * | ||||
| .\" * Send bug reports, bug fixes, enhancements, requests, flames, etc., and | .\" * Send bug reports, bug fixes, enhancements, requests, flames, etc., and | ||||
| .\" * I'll try to keep a version up to date. I can be reached as follows: | .\" * I'll try to keep a version up to date. I can be reached as follows: | ||||
| .\" * Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul | .\" * Paul Vixie <paul@vix.com> uunet!decwrl!vixie!paul | ||||
| .\" */ | .\" */ | ||||
| .\" | .\" | ||||
| .\" $FreeBSD$ | .\" $FreeBSD$ | ||||
| .\" | .\" | ||||
| .Dd June 29, 2008 | .Dd August 21, 2016 | ||||
| .Dt CRON 8 | .Dt CRON 8 | ||||
| .Os | .Os | ||||
| .Sh NAME | .Sh NAME | ||||
| .Nm cron | .Nm cron | ||||
| .Nd daemon to execute scheduled commands (Vixie Cron) | .Nd daemon to execute scheduled commands (Vixie Cron) | ||||
| .Sh SYNOPSIS | .Sh SYNOPSIS | ||||
| .Nm | .Nm | ||||
| .Op Fl j Ar jitter | .Op Fl j Ar jitter | ||||
| .Op Fl J Ar rootjitter | .Op Fl J Ar rootjitter | ||||
| .Op Fl m Ar mailto | .Op Fl m Ar mailto | ||||
| .Op Fl n | |||||
| .Op Fl s | .Op Fl s | ||||
| .Op Fl o | .Op Fl o | ||||
| .Op Fl x Ar debugflag Ns Op , Ns Ar ... | .Op Fl x Ar debugflag Ns Op , Ns Ar ... | ||||
| .Sh DESCRIPTION | .Sh DESCRIPTION | ||||
| The | The | ||||
| .Nm | .Nm | ||||
| utility should be started from | utility should be started from | ||||
| .Pa /etc/rc | .Pa /etc/rc | ||||
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| .Ar mailto | .Ar mailto | ||||
| mailbox. | mailbox. | ||||
| Sending mail will be disabled by default if | Sending mail will be disabled by default if | ||||
| .Ar mailto | .Ar mailto | ||||
| set to a null string, usually specified in a shell as | set to a null string, usually specified in a shell as | ||||
| .Li '' | .Li '' | ||||
| or | or | ||||
| .Li \*q\*q . | .Li \*q\*q . | ||||
| .It Fl n | |||||
| Don't daemonize, run in foreground instead. | |||||
| .It Fl s | .It Fl s | ||||
| Enable special handling of situations when the GMT offset of the local | Enable special handling of situations when the GMT offset of the local | ||||
| timezone changes, such as the switches between the standard time and | timezone changes, such as the switches between the standard time and | ||||
| daylight saving time. | daylight saving time. | ||||
| .Pp | .Pp | ||||
| The jobs run during the GMT offset changes time as | The jobs run during the GMT offset changes time as | ||||
| intuitively expected. | intuitively expected. | ||||
| If a job falls into a time interval that disappears | If a job falls into a time interval that disappears | ||||
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