List all open log files

pattamuthuaj has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks,

A number of scripts (process) are running in our server (HP-Unix). Everyone creates the log file. I need to list all the log files that are currently being updated

Is there any other way to list the log files that are currently updated apart from based on the modified time?

Thanks,

Patta

Comment on List all open log files

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Re: List all open log files by varian (Chaplain) on Mar 31, 2007 at 06:27 UTC
You could write a small Perl script to capture the output of the Unix command lsof for this purpose, it shows all files on the system that are in use by processes. You will need root privs to use it and select the type of logfiles you're interested in. lsof has a lot of options to track file size changes etc.	[reply]
Re^2: List all open log files by betterworld (Curate) on Mar 31, 2007 at 23:00 UTC
You will need root privs to use it I don't know about HP-UX, but on Linux the user privileges of the process which is writing the logs will suffice.	[reply]
Re^2: List all open log files by blazar (Canon) on Apr 01, 2007 at 10:30 UTC
There's also fuser and its corresponding Perl module Linux::Fuser.	[reply]
Re^2: List all open log files by Anonymous Monk on Apr 01, 2007 at 02:59 UTC
Thanks varian. I dont have the roor privilege Could I know the logic of the lsof command please? Regards, Patta	[reply]
Re^3: List all open log files by varian (Chaplain) on Apr 01, 2007 at 06:50 UTC
Generally speaking lsof consults the 'files' in the /proc directory, hence realtime kernel memory structures. Refer to the manual pages (man lsof) for more details. If you do not have root privs then the lsof command will only show open files for processes that you own so not sure if that would do you much good?	[reply]