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From: dan@rna.UUCP
Newsgroups: comp.unix.questions
Subject: Stupid shell I/O redirection question...
Message-ID: <612@rna.UUCP>
Date: Mon, 23-Feb-87 00:12:01 EST
Article-I.D.: rna.612
Posted: Mon Feb 23 00:12:01 1987
Date-Received: Tue, 24-Feb-87 02:29:23 EST
Organization: Rockefeller Neurobiology
Lines: 26


	Forgive me for being lazy and not finding the (one true) answer myself,
but I've always wanted to know how to do the following:

	I have a shell script which issues commands that generate output on
both the stdout and stderr (1 and 2). I want to redirect both stdout and stderr
of the script through a pipe (without hacking the script (the same question
would apply to a single program that wrote on 1 and 2, anyways). Like this:

cmd:
	time date
	time who

	The time command writes its answer to stderr while date and who write
to stdout. I then wish to redirect both outputs to a pipe, say tee to both see
and capture the results (I know I could use script, etc.) The best solution I
could find is:

	(cmd 2>&1) | tee log

	I believe this wastes a shell, but just removing the () doesn't work
since the 2>&1 (dup syscall) happens before the pipe is created. Perhaps

	(exec cmd 2>&1) | tee log

	Well is there some other syntax or funny combination of >|12& to use ?