How to inherent non-zero exit status using pipe?

[Peng Yu]

Hi,


The following example returns the exit status of the last command in a
pipe. I'm wondering if there is a way to inherent non-zero exit status
using pipe. That is, if there is any command in a pipe that return a
non-zero status, I'd like the whole pipe return a non-zero status.

$ cat main.sh
#!/usr/bin/env bash

echo abc 1>&2
echo abc 1>&2
echo abc 1>&2
echo abc 1>&2
echo abc 1>&2
exit 1
$ ./main.sh
abc
abc
abc
abc
abc
$ echo $?
1
$  ./main.sh |head -n 3
abc
abc
abc
abc
abc
$ echo $?
0


-- 
Regards,
Peng