diff options
Diffstat (limited to 'upstream/opensuse-tumbleweed/man5/anacrontab.5')
-rw-r--r-- | upstream/opensuse-tumbleweed/man5/anacrontab.5 | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/upstream/opensuse-tumbleweed/man5/anacrontab.5 b/upstream/opensuse-tumbleweed/man5/anacrontab.5 new file mode 100644 index 00000000..f7ca5c00 --- /dev/null +++ b/upstream/opensuse-tumbleweed/man5/anacrontab.5 @@ -0,0 +1,145 @@ +.TH ANACRONTAB 5 2012-11-22 "cronie" "File Formats" +.SH NAME +/etc/anacrontab \- configuration file for Anacron +.SH DESCRIPTION +The +.I /etc/anacrontab +configuration file describes the jobs controlled by +.BR anacron (8). +It can contain three types of lines: job-description lines, environment +assignments, or empty lines. +.PP +Job-description lines can have the following format: +.PP + period in days delay in minutes job-identifier command +.PP +The +.I period in days +variable specifies the frequency of execution of a job in days. This +variable can be represented by an integer or a macro (@daily, @weekly, +@monthly), where @daily denotes the same value as the integer 1, @weekly +the same as 7, and @monthly specifies that the job is run once a month, +independent on the length of the month. +.PP +The +.I delay in minutes +variable specifies the number of minutes anacron waits, if necessary, +before executing a job. This variable is represented by an integer where +0 means no delay. +.PP +The +.I job-identifier +variable specifies a unique name of a job which is used in the log files. +.PP +The +.I command +variable specifies the command to execute. The command can either be a +command such as +.B ls /proc >> /tmp/proc +or a command to execute a custom script. +.PP +Environment assignment lines can have the following format: +.PP + VAR=VALUE +.PP +Any spaces around +.I VAR +are removed. No spaces around +.I VALUE +are allowed (unless you want them to be part of the value). The +specified assignment takes effect from the next line until the end of the +file, or to the next assignment of the same variable. +.PP +The +.I START_HOURS_RANGE +variable defines an interval (in hours) when scheduled jobs can be run. +In case this time interval is missed, for example, due to a power down, +then scheduled jobs are not executed that day. +.PP +The +.I RANDOM_DELAY +variable denotes the maximum number of minutes that will be added to the +delay in minutes variable which is specified for each job. A +.I RANDOM_DELAY +set to 12 would therefore add, randomly, between 0 and 12 minutes to the +delay in minutes for each job in that particular anacrontab. When set to +0, no random delay is added. +.PP +If +.I MAILTO +is defined (and non-empty), mail is sent to the specified address, +otherwise, system user is used. +.PP +If +.I MAILFROM +is defined (and non-empty), it is used as the envelope sender address, +otherwise, system user is used. +.PP +(Note: Both +.I MAILFROM +and +.I MAILTO +variables are expanded, so setting them as in the following example works as expected: MAILFROM=cron-$USER@cron.com ($USER is replaced by the system user) ) +.PP +If +.I NO_MAIL_OUTPUT +is defined (and non-empty), the standard output and error descriptors of job processes are not redirected and e-mailed. +.PP +.PP +Empty lines are either blank lines, line containing white spaces only, or +lines with white spaces followed by a '#' followed by an arbitrary +comment. +.PP +You can continue a line onto the next line by adding a '\\' at the end of it. +.PP +In case you want to disable Anacron, add a line with +.I 0anacron +which is the name of the script running the Anacron into the +.I /etc/cron.hourly/jobs.deny +file. +.SH EXAMPLE +This example shows how to set up an Anacron job similar in functionality to +.I /etc/crontab +which starts all regular jobs +between 6:00 and 8:00 +.I only. +A +.I RANDOM_DELAY +which can be 30 minutes at the most is specified. Jobs will run +serialized in a queue where each job is started only after the previous +one is finished. +.PP +.nf +# environment variables +SHELL=/bin/sh +PATH=/sbin:/bin:/usr/sbin:/usr/bin +MAILTO=root +RANDOM_DELAY=30 +# Anacron jobs will start between 6am and 8am. +START_HOURS_RANGE=6-8 +# delay will be 5 minutes + RANDOM_DELAY for cron.daily +1 5 cron.daily nice run-parts /etc/cron.daily +7 0 cron.weekly nice run-parts /etc/cron.weekly +@monthly 0 cron.monthly nice run-parts /etc/cron.monthly +.fi +.SH "SEE ALSO" +.BR anacron (8), +.BR crontab (1) +.PP +The Anacron +.I README +file. +.SH AUTHOR +.MT itzur@\:actcom.\:co.\:il +Itai Tzur +.ME +.PP +Currently maintained by +.MT pasc@\:(debian.\:org|\:redellipse.\:net) +Pascal Hakim +.ME . +.PP +For Fedora, maintained by +.MT mmaslano@redhat.com +Marcela Mašláňová +.ME . |