RE: Unix tee command

From: Guy Hammond <guy.hammond_at_avt.co.uk>
Date: Wed, 11 Jul 2001 07:56:17 -0700
Message-ID: <F001.003472C6.20010711075200@fatcity.com>

The "tee" command simply does what you say: it writes a copy to a file as well as writing it to the console. You could get a similar result by

tail -f log_file
script_file >log_file &

Are you writing a script that needs to have two stream outputs? Or is it important that you watch the script as it runs? If so, then your method makes sense.

HTH, g

-----Original Message-----

Sent: Wednesday, July 11, 2001 3:12 PM
To: Multiple recipients of list ORACLE-L

I do not understand the difference between these two commands:

        script_file > log_file
        script_file | tee log_file

As I understand, the first runs and redirects its standard output to a log
file. The second runs and pipes its standard output to the tee command, which copies its standard input into its standard output. I have been instructed to use the latter, but dont want to do it blindly without understanding why.

Thanks
Erik
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Author: Guy Hammond
  INET: guy.hammond_at_avt.co.uk

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