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PID - Getting the processname of terminated/old Process

 
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# 1  
Old 08-27-2008
PID - Getting the processname of terminated/old Process
Hi all!

I'm using CentOS 5.2 with KDE.

Is it possible to get a processname/cmd of a terminated process (= PID not present with PS-command) ?

Are the processnames/scriptnames logged somewhere? (I did not find them in /var/log/messages)
Last edited by JohnMurdoch; 08-27-2008 at 05:24 AM..
# 2  
Old 08-27-2008
There is not normally any way to recover the PID of a process after it's removed from the process table. Some process-accounting add-ons such as sar might be able to provide you with this information.
# 3  
Old 08-27-2008
thank you for information! I will look at sar

One last little question,
is there a general table for exit codes in linux or has every process its own exit codes?
(e.g. exit codes from /var/log/messages)
# 4  
Old 08-27-2008
There is some standardization but no generally applicable convention, other than that 0 means success and other values are failure codes. Examine the exit codes for grep as a good example (they are explained in its manual page); many of them are rather specific to the application.
# 5  
Old 08-27-2008
As era said there is some standardization. These are documentated in /usr/include/errno.h and on the man pages for each command, utility or interface.
# 6  
Old 08-27-2008
Actually on Linux /usr/include/errno.h is just a morass of conditional #includes and no real documentation. /usr/include/asm-generic/errno-base.h is closer to what used historically to be in the generic top-level errno.h; see also asm-generic/errno.h
 
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