Sometimes I can't unmount a device, and I know there is a command that tells me what programs are using that device, could you tell me what command is that ?

lsof


Cheers,
Tink

fuser -m /mnt/cdrom
will list all PIDs using the filesystem mounted at /mnt/cdrom and
fuser -km /mnt/cdrom
will kill them (as root of course).

Later

first, thanx for the quick reply, your info helped me a lot . When I issue a command like fuser -m /mnt/cdrom I get the response :
/mnt/cdrom: 3014c. Is 3014c the PID of the program that locks /mnt/cdrom. If so, how can I find out what program has the 3014c PID ?

:: edit ::

ok I've got it. man fuser did the trick and ps -A |grep PID_no. 10x again

man fuser:

fuser displays the PIDs of processes using the specified files or file
systems. In the default display mode, each file name is followed by a
letter denoting the type of access:

c current directory.

e executable being run.

f open file. f is omitted in default display mode.

r root directory.

m mmap'ed file or shared library.



To see what process it is:

ps -p pid...or in your case ps -p 3014.

Try man on fuser and ps. These are great commands that can help you a lot.

Later


EDIT

Sorry, I guess you responed whilst I was typing .

You can also add -u to the fuser to add the user name of the person running the process. That might help.