In what way lsof is useful

[V. V. Ravi Kumar_1]

hi all,

i have lsof installed on my machine, but i would like know what are all the efficient ways that i can make use of lsof. i have gone through the man page, but better if somebody who can give suggestions how better i can use lsof. (with some examples).

thanks in advance
regds
ravi

[S.K. Chan]

Look at the other same thread too ..
http://forum.itrc.hp.com/cm/QuestionAnswer/1,,0xbe148f960573d611abdb0090277a778c,00.html

[S.K. Chan]

sorry .. this is the one ..

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xbe148f960573d611abdb0090277a778c,00.html

[James R. Ferguson · Accepted solution]

Hi:

Here's several, simple uses:

To see all open files of a paricular process (via its pid):

# lsof -p

To see all open files associated with a command:

# lsof -c cron

...or by a logon name:

# lsof -u
# lsof -u

...or what process is using a TCP socket:

# lsof -i tcp:161
# lsof -i udp:161

Regards!

...JRF...

[MANOJ SRIVASTAVA]

Also suppose a porcess has a port which is hanging , you can grep on the port no. and know which process owned that port no and kill that process to free that port . Genrally help ful in web applications .

man lsof will help you more if you have got it installed.



Manoj Srivastava

[Bill McNAMARA_1]

when you want to find out whos creating the /tmp/log that is building rappidly,
when you want to unmount a filesystem but it's busy, find out who's using it.. etc..

List open files (remember in unix everything is a file)

Later,
Bill