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Top Forums Shell Programming and Scripting Redirecting STDERR to file and screen, STDOUT only to file Post 302698387 by thuranga on Monday 10th of September 2012 03:22:38 AM
Old 09-10-2012
Quote:
Originally Posted by bakunin

...

Code:
script 2>&1 1>/some/file | tee -a /some/file

This finally does what we want: output to <stdout> is put into "/some/file", output to <stderr> is being displayed before being appended to /some/file" too.

The only uncertainty left is that i am not sure if the exact sequence of the messages will be preserved, especially if there is high load and many messages. You will have to try that. I'll be tankful if you could post a follow-up telling us this.
Hi bakunin,
thank you for your notes! I tried your adjustments, but the STDOUT will always displayed on screen.

I need this for a cronjob. Actually everything (STDOUT & STDERR) is written to a log. But I want to get informed, when an error occurs.
 

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tee(1)							      General Commands Manual							    tee(1)

NAME
tee - pipe fitting to copy standard output to file SYNOPSIS
[file]... DESCRIPTION
The command transcribes the standard input to the standard output and makes copies in the files. Options This option ignores interrupts. This option appends the output to the files rather than overwriting the files. EXTERNAL INFLUENCES
Environment Variables determines the language in which messages are displayed. If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari- able. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5). International Code Set Support Single- and multibyte character code sets are supported. RETURN VALUE
The command returns zero upon successful completion, or nonzero if the command fails. EXAMPLES
Write a list of users to the screen and also append the list to the file STANDARDS CONFORMANCE
tee(1)
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