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Full Discussion: Mindboggling difference between using "tee" and "/usr/bin/tee" in bash
Top Forums Shell Programming and Scripting Mindboggling difference between using "tee" and "/usr/bin/tee" in bash Post 303007444 by stompadon on Thursday 16th of November 2017 04:30:57 PM
Old 11-16-2017
Mindboggling difference between using "tee" and "/usr/bin/tee" in bash
I'm on Ubuntu 14.04 and I manually updated my coreutils so that "tee" is now on version 8.27
I was running a script using bash where there is some write to pipe error at some point causing the tee command to exit abruptly while the script continues to run. The newer version of tee seems to prevent this.

I had installed the newer coreutils to /usr/bin and now running
Code:
bash -c './train.sh | /usr/bin/tee -a latest-log; exit ${PIPESTATUS[0]}'

works but
Code:
bash -c './train.sh | tee -a latest-log; exit ${PIPESTATUS[0]}'

does not

This might seem normal because vanilla "tee" should be the older version. But when I check with
Code:
tee --version

it is showing 8.27!
Code:
which tee

is also showing /usr/bin/tee
Code:
/usr/bin/tee --version

Is of course showing 8.27

This issue is killing me. Please let me know what could be wrong or what I can do to diagnose this.
Last edited by Scott; 11-16-2017 at 05:39 PM.. Reason: Replaced ICODE tags for (multi-line)CODE tags
 

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LEARN ABOUT SUNOS

tee

tee(1)								   User Commands							    tee(1)

NAME

       tee - replicate the standard output

SYNOPSIS

       tee [-ai] [file...]

DESCRIPTION

       The  tee  utility  will	copy  standard	input to standard output, making a copy in zero or more files. tee will not buffer its output. The
       options determine if the specified files are overwritten or appended to.

OPTIONS

       The following options are supported.

       -a	Appends the output to the files rather than overwriting them.

       -i	Ignores interrupts.

OPERANDS

       The following operands are supported:

       file	A path name of an output file.	Processing of at least 13 file operands will be supported.

USAGE

       See largefile(5) for the description of the behavior of tee when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables that affect the execution of tee: LANG,  LC_ALL,	LC_CTYPE,  LC_MES-
       SAGES, and NLSPATH.

EXIT STATUS

       The following exit values are returned:

       0	The standard input was successfully copied to all output files.

       >0	The number of files that could not be opened or whose status could not be obtained.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cat(1), attributes(5), environ(5), largefile(5), standards(5)

SunOS 5.10							    20 Dec 1996 							    tee(1)
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