bash: shopt -s lastpipe case errors

dudengke · 08-09-2016, 04:26 AM

My file contain:

Code:

shopt -s lastpipe
exit 142 | false
echo $? -- ${PIPESTATUS[@]}

I run command: /bin/bash myfile
It output:

Code:

Hangup | false
129 -- 142 129

The correct should:

Code:

1 -- 142 1

When I run the above line by line in shell, it was correct.
why run it on a file, it failed?

pan64 · 08-09-2016, 04:59 AM

would be nice to explain what you have executed line by line, not only the commands, but the results too.
you made at least a mistake in the first line (lastpipt is incorrect), anyway I do not really understand what did you try.

dudengke · 08-09-2016, 10:36 AM

Quote:

Originally Posted by pan64

would be nice to explain what you have executed line by line, not only the commands, but the results too.
you made at least a mistake in the first line (lastpipt is incorrect), anyway I do not really understand what did you try.

Sorry, it is: shopt -s lastpipe

dudengke · 08-10-2016, 02:09 AM

Quote:

Originally Posted by pan64

would be nice to explain what you have executed line by line, not only the commands, but the results too.
you made at least a mistake in the first line (lastpipt is incorrect), anyway I do not really understand what did you try.

Hi pan64

Thanks first! I just want to know why run above in a file, it would report

Code:

Hangup | false

I was testing the behave of shopt command.

//dudengke