Capture exit code for remote script?

Question

I have a shell script that runs on my server every day. It does some house cleaning and connects to a remote host to perform other tasks i.e.

#!/bin/bash

#do something...
...locally...

#run remote script...
ssh user@remotehost "/opt/process/verify.sh"

exit

It works fine but to be safe I would like to capture (if possible) the return code from "/opt/process/verify.sh" i.e.

if fail, return "1" and send email to admin
if success, return "0" and send email to developer.

I started reading about the command trap. Can I use it for that purpose? Is there another option?

Ignacio Vazquez-Abrams · Accepted Answer · 2011-10-06 17:12:52Z

19

ssh returns the return value of the command in question, or 255 if an error occurred in ssh itself. Simply check this value and take appropriate action.

answered Oct 6, 2011 at 17:12

Ignacio Vazquez-Abrams

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Alfred Fazio · Accepted Answer · 2011-10-06 17:13:54Z

8

You can use the $? variable to get the response code. For instance:

% ssh somebox /bin/true
% echo $?
0
% ssh somebox /bin/false
% echo $?
1

answered Oct 6, 2011 at 17:13

Alfred Fazio

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Alessandro Pezzato · Accepted Answer · 2011-10-06 17:13:08Z

5

ssh user@remotehost "/opt/process/verify.sh"
echo $?

echo $? print return code

answered Oct 6, 2011 at 17:13

Alessandro Pezzato

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