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Top Forums Shell Programming and Scripting how should I get the return value Post 302573577 by yanglei_fage on Tuesday 15th of November 2011 03:54:34 AM
Old 11-15-2011
how should I get the return value

Code:
ls xx > yy.log

echo $? can get the return value of "ls xx"

but if I use
Code:
ls xx |tee -a yy.log

I can't get the return value of "ls xx", and I get the return value of the whole cmd "ls xx |tee -a yy.log", it is always "0"

my question is how could I get the return value of "ls xx" using "tee" to get the log

Moderator's Comments:
Mod Comment Having so many posts you should be familiar with code tags - check your PMs.

Last edited by zaxxon; 11-15-2011 at 05:39 AM.. Reason: code tags
 

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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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