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Full Discussion: Q1 :/dev/null Q2 -A
Top Forums UNIX for Advanced & Expert Users Q1 :/dev/null Q2 -A Post 88713 by blowtorch on Tuesday 8th of November 2005 08:51:28 AM
Old 11-08-2005
To answer your second question, I did a little googling:
I got this from the Linux man page:
Quote:
stat STAT multi-character process state. See section PROCESS STATE CODES for the different values meaning. See also s and state if you just want the first character displayed.
If you look up the PROCESS STATE CODES, this is what you get:
Quote:
D
Uninterruptible sleep (usually IO)
R
Running or runnable (on run queue)
S
Interruptible sleep (waiting for an event to complete)
T
Stopped, either by a job control signal or because it is being traced.
W
paging (not valid since the 2.6.xx kernel)
X
dead (should never be seen)
Z
Defunct ("zombie") process, terminated but not reaped by its parent.
The state 'A' does not appear.

--EDIT--
Even the HP-UX man page does not list a process state 'A'. HP ps does not have a STAT column, it has S instead.
S (l) The state of the process:
0 non-existent;
S sleeping;
W waiting;
R running;
I intermediate;
Z terminated;
T stopped;
X growing.
--/EDIT--
--EDIT--
Ditto with Sun
S (l)
The state of the process:
O
Process is running on a processor.
S
Sleeping: process is waiting for an event to complete.
R
Runnable: process is on run queue.
Z
Zombie state: process terminated and parent not waiting.
T
Process is stopped, either by a job control signal or because it is being traced.
--/EDIT--

Last edited by blowtorch; 11-08-2005 at 10:04 AM..
 

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stopped(7)						 Miscellaneous Information Manual						stopped(7)

NAME
stopped - event signalling that a job has stopped SYNOPSIS
stopped JOB=JOB INSTANCE=INSTANCE RESULT=RESULT [PROCESS=PROCESS] [EXIT_STATUS=STATUS] [EXIT_SIGNAL=SIGNAL] [ENV]... DESCRIPTION
The stopped event is generated by the Upstart init(8) daemon when an instance of a job has stopped. The JOB environment variable contains the job name, and the INSTANCE environment variable contains the instance name which will be empty for single-instance jobs. If the job was stopped normally, the RESULT environment variable will be ok, otherwise if the job was stopped 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 was stopped because it hit the respawn limit. 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) emits this event as an informational signal, services and tasks started or stopped by this event will do so in parallel with other activity. It is typically combined with the starting(7) event by services when inserting themselves as a dependency. Job configuration files may use the export stanza to export environment variables from their own environment into the stopped event. See init(5) for more details. EXAMPLE
A service that wishes to be running whenever another service would be running, started before and stopped after it, might use: start on starting apache stop on stopped apache A task that must be run after another task or service has been stopped might use: start on stopped postgresql SEE ALSO
starting(7) started(7) stopping(7) init(5) Upstart 2009-07-09 stopped(7)
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