HCoop Git - hcoop/zz_old/ikiwiki/blob - MemberManual/UsingCron.mdwn

   1 #pragma section-numbers off
   2
   3 This page describes the basic use of cron on HCoop systems.
   4
   5 [[TableOfContents]]
   6
   7 = Prerequisites =
   8
   9 It is very important that you read the [:MemberManual/RunningUnattendedCommands:Running Unattended Commands page] to understand the general idea of how to run unattended commands on Mire.
  10
  11 = Making a cron configuration file =
  12
  13 Cron needs a special configuration file to tell it how to operate.  It is suggested that this file be called {{{~/.crontab}}}, though it can have any name.
  14
  15 For an explanation of the format of this file, run:
  16
  17 {{{
  18 man 5 crontab
  19 }}}
  20
  21 = Activating your cron configuration =
  22
  23 Once you are satisfied with your setup, run the following command to activate your changes, assuming that your configuration file is called {{{~/.crontab}}}:
  24
  25 {{{
  26 crontab ~/.crontab
  27 }}}
  28
  29 = Examples =
  30
  31 One convention for making scripts to run commands in their own PAG, as specified by the [:MemberManual/RunningUnattendedCommands:Running Unattended Commands page], is to create the {{{~/scripts}}} directory, and place your scripts there.  Then, make a cron configuration file that looks something like this.
  32
  33 {{{
  34 09 0 * * 0   ~/scripts/clean-mail
  35 11 0 * * 0   ~/scripts/remove-tmp
  36 12 0 * * 0   ~/scripts/weekly-comment-check
  37 */10 * * * * ~/scripts/make-git-projects
  38 }}}