Trying to find lsof version information
 

Hi ALL,

I am running a script on several hundred boxes and trying to fing the version of lsof they have.
I have created a scipr for that which runs "lsof -v" through ssh on those boxes.
I am taking output as: line=`lsof -v | sed '/^$/d' | grep "revision"`
echo $line.

But $line is not storing anything?? i dont know why, i think the control is not passing to script , after lsof is run.
How can i do that.

Appreciate your help in this regard.

Redirection
 

You need to redirect stderr for this to work.

line=`lsof -v 2>&1 | sed '/^$/d' | grep "revision"`
echo $line

Example output :-

revision: 4.80 latest revision: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/ compiler version: 4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux)

Hi,

Thanks scobiej.Its working :)

Can you explain why we need to do that?

Because the version info is "debug" output, it's not lsof's core
business. You would have noticed that when you run your command
w/o assigning it to a variable that the "grep" doesn't seem to
take, and that you get a whole lot of info?



Cheers,
Tink

Ok. Thanks for the help.