All periodic sub-scripts <larf> now have their return codes interpreted by periodic(8). Output may be masked based on variable values in periodic.conf. It's also now possible to email periodic output to arbitrary addresses, or to send it to a log file, examples of which can be found in newsyslog.conf. The upshot of it all should be no discernable changes to the default behaviour of periodic(8). PR: 21250
235 lines
6.4 KiB
Groff
235 lines
6.4 KiB
Groff
.\" Copyright (c) 1997 FreeBSD, Inc.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd 13 August 1997
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.Os FreeBSD 3.0
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.Dt PERIODIC 8
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.Sh NAME
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.Nm periodic
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.Nd
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run periodic system functions
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.Sh SYNOPSIS
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.Nm periodic
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.Ar directory Ns No ...
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.Sh DESCRIPTION
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The
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.Nm
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program is intended to be called by cron(8) to execute shell scripts
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located in the specified directory.
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.Pp
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One or more of the following arguments must be specified:
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.Bl -tag -width Fl
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.It Cm daily
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Perform the standard daily periodic executable run.
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This usually occurs early in the morning (local time).
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.It Cm weekly
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Perform the standard weekly periodic executable run.
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This usually occurs on Sunday mornings.
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.It Cm monthly
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Perform the standard monthly periodic executable run.
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This usually occurs on the first day of the month.
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.It Ar path
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An arbitrary directory containing a set of executables to be run.
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.El
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.Pp
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If an argument is an absolute directory name it is used as is, otherwise
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it is searched for under
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.Pa /etc/periodic
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and any other directories specified by the
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.Va local_periodic
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setting in
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.Xr periodic.conf 5
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(see below).
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.Pp
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The
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.Nm
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program will run each executable file in the directory or directories
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specified.
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If a file does not have the executable bit set, it is silently ignored.
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.Pp
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Each script is required to exit with one of the following values:
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.Bl -tag -width XXXX
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.It 0
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The script has produced nothing notable in it's output.
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The
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.Va <basedir>_show_success
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variable controls the masking of this output.
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.It 1
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The script has produced some notable information in it's output.
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The
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.Va <basedir>_show_info
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variable controls the masking of this output.
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.It 2
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The script has produced some warnings due to invalid configuration settings.
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The
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.Va <basedir>_show_badconfig
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variable controls the masking of this output.
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.It >2
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The script has produced output that must not be masked.
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.El
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.Pp
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If the relevant variable (where
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.Ar <basedir>
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is the base directory in which the script resides) is set to
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.Dq NO
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in
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.Pa periodic.conf ,
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.Nm
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will mask the script output.
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If the variable is not set to either
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.Dq YES
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or
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.Dq NO ,
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it will be given a default value as described in
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.Xr periodic.conf 5 .
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.Pp
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All remaining script output is delivered based on the value of the
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.Va <basedir>_output
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setting.
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.Pp
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If this is set to a path name (beginning with a
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.Dq /
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Character), output is simply logged to that file.
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.Xr newsyslog 8
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knows about the files
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.Pa /var/log/daily.log ,
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.Pa /var/log/weekly.log
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and
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.Pa /var/log/monthly.log ,
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and if they exist, it will rotate them at the appropriate times.
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These are therefore good values if you wish to log
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.Nm
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output.
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.Pp
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If the
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.Va <basedir>_output
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value does not begin with a
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.Dq / ,
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it is assumed to contain a list of email addresses, and the output is
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mailed to them.
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.Pp
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If
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.Va <basedir>_output
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is not set, it defaults to
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.Dq root .
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.Sh ENVIRONMENT
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The
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.Nm
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command sets the
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.Ev PATH
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environment to include all standard system directories, but no additional
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directories, such as
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.Pa /usr/local/bin .
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If executables are added which depend upon other path components, each
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executable must be responsible for configuring its own appropriate environment.
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.Sh FILES
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.Bl -tag -width /etc/periodic
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.It Pa /etc/crontab
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The
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.Nm
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program is typically called via entries in the system default cron table.
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.It Pa /etc/periodic
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The top level directory containing
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.Pa daily ,
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.Pa weekly ,
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and
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.Pa monthly
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subdirectories which contain standard system periodic executables.
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.It Pa /etc/defaults/periodic.conf
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The
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.Pa periodic.conf
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system registry contains variables that control the behaviour of
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.Nm
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and the standard
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.Pa daily ,
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.Pa weekly ,
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and
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.Pa monthly
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scripts.
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.It Pa /etc/periodic.conf
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This file contains local overrides for the default periodic configuration.
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.El
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.Sh EXAMPLES
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The system crontab should have entries for
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.Nm
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similar to the following example:
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.Pp
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.Dl # do daily/weekly/monthly maintenance
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.Dl 0 2 * * * root periodic daily
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.Dl 0 3 * * 6 root periodic weekly
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.Dl 0 5 1 * * root periodic monthly
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.Pp
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The
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.Pa /etc/defaults/periodic.conf
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system registry will typically have a
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.Va local_periodic
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variable reading:
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.Pp
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.Dl local_periodic="/usr/local/etc/periodic /usr/X11R6/etc/periodic"
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.Pp
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To log
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.Nm
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output instead of receiving it as email, add the following lines to
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.Pa /etc/periodic.conf :
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.Pp
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.Dl daily_output=/var/log/daily.log
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.Dl weekly_output=/var/log/weekly.log
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.Dl monthly_output=/var/log/monthly.log
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.Pp
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To only see important information from daily periodic jobs, add the
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following lines to
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.Pa /etc/periodic.conf :
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.Pp
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.Dl daily_show_success=NO
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.Dl daily_show_info=NO
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.Dl daily_show_badconfig=NO
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.Sh SEE ALSO
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.Xr sh 1 ,
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.Xr crontab 5 ,
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.Xr periodic.conf 5 ,
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.Xr cron 8 ,
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.Xr newsyslog 8
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.Rs
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.Sh DIAGNOSTICS
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Exit status is 0 on success and 1 if the command
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fails for one of the following reasons:
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.Bl -diag
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.It usage: periodic <directory of files to execute>
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No directory path argument was passed to
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.Nm
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to specify where the script fragments reside.
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.It <directory> not found
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Self explanatory.
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.El
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.Sh HISTORY
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The
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.Nm
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program first appeared in
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.Fx 3.0 .
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.Sh AUTHORS
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.An Paul Traina Aq pst@FreeBSD.org
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.An Brian Somers Aq brian@Awfulhak.org
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