redirecting output/error of a background job started from a script file

[Mangal Pandey]

I'm trying to invoke one shell script (say "script2")in background from another shell script (say "script1" running on foreground). Script1 is sending all the messages to a logfile (say "log1"). now i want to redirect all the messages generated from script2 to a different log file, but it is always sending its messages to "log1" only.

here is the script1:

--script1 starts----
-----------------
---doing its own processing-----
---doing its own processing-----

ksh script2 >& log2 &

---script1 stops------

[Oviwan · Accepted solution]

Hey

redirect it like that:

script2 > logfile 2>&1

and put it in the backgroup

Regards

[Mangal Pandey]

This is not working and logs are still going to parents log file.

[Oviwan]

this should redirect STDOUT and STDERR to the logfile...

what if you execute it in a subshell:

$(script2 > logfile2 2>&1) &

[Dennis Handly]

>Oviwan: redirect it like that:
script2 > logfile 2>&1

>This is not working and logs are still going to parents log file.

I can't see how it does that unless script2 is tricky. What's in that file? Do you see log1 there? Unless there is a redirect on every line, the only way to redirect inside the script is to do it on an exec line:
exec > log1 2>&1

[Peter Nikitka]

Hi,

my additional question is, if 'script1' is written in posix shell syntax or if its csh syntax. In a C-compatible shell, doing something like this
prompt: echo $SHELL
/bin/tcsh
prompt: ls /tmp /notexiting >& ~/tmp/out&

will produce output on stderr like
[1] 24483
[1] Exit 2 ls /tmp >& ~/tmp/out

but the file ~/tmp/out will contain both stdout and stderr of the above command.

mfG Peter

[Mangal Pandey]

Thank you..its working fine now.
there was a redirection in script2 itself which was causing this problem and it was hidden somwhere in the big script file.

Thanks all for your prompt reply.

[Dennis Handly]

You haven't assigned any points yet. Please read the following:
http://forums1.itrc.hp.com/service/forums/helptips.do?#33