how to get return value from command run within screen?

slinx · 01-13-2010, 09:44 AM

Hello,

I'm trying to get a return value from the command running within screen. I have tried

Code:

screen "some_command ; echo \$? > retval"

but this refuses to write "retval".

Is there any way to pass the return value of a command to the return value of screen, or some other way to get it?

Thanks!

slinx · 01-14-2010, 09:50 AM

Figured this one out - the problem is that screen was requiring an absolute path. So if I create a wrapper script, such as "/usr/local/bin/command":

Code:

#!/bin/bash

<run my command>

echo $? > $0.retval

then, the screen command

Code:

screen /usr/local/bin/command

leaves the return value from <run my command> in /usr/local/bin/command.retval