syntax of lsof command

[Shivkumar]

Hi,

I want to track the hung application process or file descriptors which are not being closed gracefully or processes opened for more than required period and become unresponsive.

I want to use #lsof command. I want to store the result in a file to analyze later.

Can someone suggest a good sytax of the lsof command to accomplish the above ?

Thanks,
Shiv

[Steven E. Protter · Accepted solution]

Shalom Shiv,

Here is some sample output:

view 29810 root mem VREG 64,0x7 1568768 7257 /usr/lib/libc.2
view 29810 root mem VREG 64,0x7 241664 22103 /usr/lib/dld.sl


Note there is a definite fileystem listed /usr

I would say to begin, what is the filesystem your application is running in?

Lets say its /webshere

So:

lsof | grep webshere

Other possibilities:

lsof -c c
# everything with command beginning with the letter c.

Perhaps w for webshere in this case.

+d s
# Open instances of directory s

I'm giving examples but how to proceed will depend heavily on how your system is setup.

I'm reading through the man page also.

A combination of looking at how the system is structured and looking for interesting options on the man page will get you going.

How did the tusc thing work out?

SEP

[Shivkumar]

SEP; Thanks a lot for providing very useful syntax on tusc. tusc is not installed on the system. I will install it and test the command provided by you.

Regards,
Shiv