Ubuntu :: Capturing Command Output Response

I run a 3rd party command line utility and it works fine, but sometimes it says "Error blah blah blah... Connection timed out"

I want to script this utility, but I need to not execute the commands in the script if it gives me that connection timeout error.

bash code to capture that response from the utility? Something along the lines of:

Quote:

#!/bin/bash
3rdpartyutil > /tmp/temp.txt
if [ ! -f /tmp/temp.txt]; then
echo no error, run whatever you need to man
fi
rm /tmp/temp.txt

Unfortunately, that doesn't work because the utility outputs non-error information to the screen even when it is successful, so it always outputs something, I never need to see it, but I do need to be able to act upon if some of that text says "error" or "connection timed out"