Advanced shell scripting question :-)

[Steven W. Orr]

I have a program (which we shall call p) which produces text to both 
stdout and stderr.

I want the following three things to happen when I run p:

1. I want both stdout and stderr to go to the screen

2. I want stdout and stderr combined in a file

3. I want an error log file to only contain stderr.

p 2>&1 | tee outnerr # Solves 1 and 2

p 2> errlog	# Solves 3 but breaks 1 and 2

p 2> errlog | tee out # Solves 3 but also breaks 1 and 2.

Any takers?

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