46 lines
934 B
Groff
46 lines
934 B
Groff
.Dd Feb 6, 2015
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.Dt SCRON 1
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.Os
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.Sh NAME
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.Nm scron
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.Nd clock daemon
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.Sh SYNOPSIS
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.Nm
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.Op Fl f Ar file
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.Op Fl n
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.Sh DESCRIPTION
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.Nm
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schedules commands to be run at specified dates and times.
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.Pp
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl f Ar file
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Use the specified
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.Ar file
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instead of the default
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.Ar /etc/crontab .
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.It Fl n
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Do not daemonize.
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.El
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.Sh CONFIGURATION
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Configuration is done by editing the crontab file.
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Columns:
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minute, hour, day of month, month, day of week, command
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Separator:
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Any number of tabs or spaces.
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Value:
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* (wildcard), 30 (number), */N (repeat), 1-5 (range), or 1,3,6 (list)
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.Sh EXAMPLE
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Example of crontab file:
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# Run updatedb at 6:00 every day
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0 6 * * * updatedb
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# Run at 5:30 every business day. Log output to /var/log/backup.log.
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30 5 * * 1-5 syncbackup &>> /var/log/backup.log
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# Run as user postmaster at 5:00 every third day of month.
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0 5 */3 * * su -c 'mail -s "Hello world" a@b.com' postmaster
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