how to redirect pvdisplay error output

[S.K. Chan]

Hi,
How do I redirect pvdisplay output that has this error ..
pvdisplay: Couldn't find the volume group to which
physical volume "/dev/dsk/c2t2d0" belongs.
pvdisplay: Cannot display physical volume "/dev/dsk/c2t2d0".
to a file. The file turned up empty and it seems this output can't
be isolated from the std output

thanks in advance

[A. Clay Stephenson · Accepted solution]

That's because it's not stdout but stderr.

Try this:
pvdisplay xxx > /tmp/log 2>&1 for everything in 1 log

or
pvdisplay xxx > /tmp/log 2>/tmp/errs to get 2 separate outputs

[Sridhar Bhaskarla]

pvdisplay /dev/dsk/cxtydz 2>error

If you want both stdout and stderror together

pvdisplay /dev/dsk/cxtydz > output 2>&1

-Sri