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Full Discussion: command does not return exit status due to tee
Top Forums Shell Programming and Scripting command does not return exit status due to tee Post 302264981 by zaxxon on Friday 5th of December 2008 09:03:03 AM
Old 12-05-2008
The exit status in your case will always be that of tee and tee seems successful, so you get a zero. You would have to get it before you hand it over to tee. So maybe you are better off to separate both, ie. redirect output in the known way and check the exit status of the command producing and have a look at the written log with tail -f for example.

Example:
Code:
make all >> make_all.out 2>&1; echo $?

# in another terminal session:
tail -f make_all.out

 

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LEARN ABOUT X11R4

tee

TEE(1)								   User Commands							    TEE(1)

NAME

       tee - read from standard input and write to standard output and files

SYNOPSIS

       tee [OPTION]... [FILE]...

DESCRIPTION

       Copy standard input to each FILE, and also to standard output.

       -a, --append
	      append to the given FILEs, do not overwrite

       -i, --ignore-interrupts
	      ignore interrupt signals

       -p     diagnose errors writing to non pipes

       --output-error[=MODE]
	      set behavior on write error.  See MODE below

       --help display this help and exit

       --version
	      output version information and exit

   MODE determines behavior with write errors on the outputs:
       'warn' diagnose errors writing to any output

       'warn-nopipe'
	      diagnose errors writing to any output not a pipe

       'exit' exit on error writing to any output

       'exit-nopipe'
	      exit on error writing to any output not a pipe

       The default MODE for the -p option is 'warn-nopipe'.  The default operation when --output-error is not specified, is to exit immediately on
       error writing to a pipe, and diagnose errors writing to non pipe outputs.

AUTHOR

       Written by Mike Parker, Richard M. Stallman, and David MacKenzie.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report tee translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       Full documentation at: <http://www.gnu.org/software/coreutils/tee>
       or available locally via: info '(coreutils) tee invocation'

GNU coreutils 8.28						   January 2018 							    TEE(1)
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