On Mar 7, 2007, at 11:34 AM, Chuck Swiger wrote:
On Mar 7, 2007, at 2:49 AM, Chad Leigh -- Shire.Net LLC wrote:
On my 6.1 system I have a script that launches some java programs
[jdk142] and when I do a "ps -auxwww" I get the whole java command
line that was used in launching.
On my 6.2 system with jdk15 teh scame scripts launch the same java
programs but I just get [java] in the ps output. Nothing in the
ps manpage jumped out at me. I would like to be able to get the
whole commandline when I do the ps
From the manpage:
When printing using the command keyword, a process that has
has a parent that has not yet waited for the process (in other
zombie) is listed as ``<defunct>'', and a process which is
trying to exit is listed as ``<exiting>''. If the command
be located (usually because it has not been set, as is the
case of system
processes and/or kernel threads) the command name is printed
square brackets. The ps utility makes an educated guess as to
name and arguments given when the process was created by
or the swap area. The method is inherently somewhat
unreliable and in
any event a process is entitled to destroy this information,
so the names
cannot be depended on too much. The ucomm (accounting)
keyword can, how-
ever, be depended on.
In other words, the process is allowed to over-write the
environment (aka, the command line args & exported env variables)
and that will prevent ps from reliably returning that info. All
you can be sure of it getting argv, which is used for accounting
in the ucomm variable....
It turns out the difference between my two installations is that with
the jdk142 procfs is also mounted and ps shows the complete command.
On the server with jdk15 procfs is not mounted and does not. jdk15
also has an issue if procfs is mounted such that the java command
does not work. But I am running inside a jail so I could mount
procfs on the base server outside the jail and do ps there and test
this. These tests show that the procfs makes the difference.
Chad Leigh -- Shire.Net LLC
Your Web App and Email hosting provider
chad at shire.net
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