donlash@uncle.UUCP (Donald Lashomb) (04/07/90)
In article <3620@hcx1.SSD.CSD.HARRIS.COM> brad@SSD.CSD.HARRIS.COM (Brad Appleton) writes:
[ ]
=I have a program that is supposed to read error output from other
=programs. I want to pipe stderr to this program WITHOUT piping
=stdin as well. I have not been able to find this in TFM (I have
[ ]
This works for me:
tst 2>&1 >outfile | whatever
-Donmaart@cs.vu.nl (Maarten Litmaath) (04/07/90)
In article <12541@smoke.BRL.MIL>, gwyn@smoke.BRL.MIL (Doug Gwyn) writes: )... )>I want to pipe stderr to this program WITHOUT piping stdin as well. )... )(writes_on_stderr_and_stdout 9>&1 2>&1 1>&- | cat >stderr) 1>&9 | cat >stdout Doesn't work. Instead try: $ cat foo echo stdout echo stderr >&2 $ (sh foo 2>&1 1>&9 | cat > stderr) 9>&1 | cat > stdout Or: $ sh foo 2>&1 > stdout | cat > stderr -- 1) Will 4.5BSD have wait5()? |Maarten Litmaath @ VU Amsterdam: 2) Sleep(3) should be sleep(2) again.|maart@cs.vu.nl, uunet!mcsun!botter!maart
leo@atcmp.nl (Leo Willems) (04/08/90)
From article <3620@hcx1.SSD.CSD.HARRIS.COM>, by brad@SSD.CSD.HARRIS.COM (Brad Appleton): > > I have a program that is supposed to read error output from other > programs. I want to pipe stderr to this program WITHOUT piping > stdin as well. I have not been able to find this in TFM (I have ...... > I was hoping one of these last two might give me the output: > > this is stdout > this is STDerr > > without piping stdin at all (just stderr) Try this: prog 3>&2 2>&1 1>&3 3>&- | sed 's/std/STD/' This will swap stdout/stderr. If you know a little C under UNIX it says: prog close_3_dup_2 close_2_dup_1 close_1_dup_3 close_3 | sed Hope this helps. Leo Willems Internet: leo@atcmp.nl AT Computing UUCP: mcvax!hp4nl!kunivv1!atcmpe!leo P. O. Box 1428 6501 BK Nijmegen Phone: +31-80-566880 The Netherlands Fax: +31-80-555887