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Linux 2.6 - man page for stopping (linux section 7)

stopping(7)									      stopping(7)

       stopping - event signalling that a job is stopping


       The stopping event is generated by the Upstart init(8) daemon when an instance  of  a  job
       begins  stopping.   The	JOB  environment variable contains the job name, and the INSTANCE
       environment variable contains the instance name which will be  empty  for  single-instance

       If  the job is stopping normally, the RESULT environment variable will be ok, otherwise if
       the job is stopping because it has failed it will be failed.

       When the job has failed, the process that failed will be given in the PROCESS  environment
       variable.   This may be pre-start, post-start, main, pre-stop or post-stop; it may also be
       the special value respawn to indicate that the job is stopping because it hit the  respawn

       Finally in the case of a failed job, one of either EXIT_STATUS or EXIT_SIGNAL may be given
       to indicate the cause of the stop.  Either EXIT_STATUS will contain the exit  status  code
       of  the	process,  or  EXIT_SIGNAL  will  contain  the name of the signal that the process
       received.  The normal exit job configuration stanza can be used to prevent particular exit
       status values or signals resulting in a failed job, see init(5) for more information.

       If  neither  EXIT_STATUS  or  EXIT_SIGNAL is given for a failed process, it is because the
       process failed to spawn (for example, file not found).  See the system logs for the error.

       init(8) will wait for all services started by this event to be running, all tasks  started
       by  this  event	to  have finished and all jobs stopped by this event to be stopped before
       allowing the job to continue stopping.

       This allows jobs to depend on other jobs, safely stopping themselves before  their  depen-
       dency goes away.  This event is typically combined with the started(7) event by services.

       Job  configuration  files  may  use the export stanza to export environment variables from
       their own environment into the stopping event.  See init(5) for more details.

       A service that wishes to depend on another service might use:

	      start on started apache
	      stop on stopping apache

       A task that must be run before another task or service is stopped might use:

	      start on stopping postgresql RESULT=ok

       starting(7) started(7) stopped(7) init(5)

Upstart 				    2009-07-09				      stopping(7)

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