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bluesmoon
Asked: 2012-08-13 10:30:52 +0800 CST

How do I get the exit code of a process that's piped to tee?

  • 772

I have bash code like this (Mac OS X):

foo.sh | tee foo.log echo $?

The problem is that $? contains the exit code of tee and not the exit code of foo.sh. How do I get the exit code of foo.sh?

mac-osx

2 Answers

  1. The environment variable $PIPESTATUS is an array of exit statuses for all processes in a pipeline.

    • 7

  2. Also use a subshell:

    tm@hoegaarden:~$ cat foo.sh
#!/bin/bash

echo "stuff and junk"

exit 123
tm@hoegaarden:~$ (./foo.sh ; echo $? > ./retval ) | tee output
stuff and junk
tm@hoegaarden:~$ cat retval 
123
    • 3