proper way to detect shell exit code when errexit option set

Question

I prefer to write solid shell code, so the errexit & nounset is alway set.

The following code will stop at bad_command line

#!/bin/b         


        

Answer 1

Keep with errexit. It can help find bugs that otherwise might have unpredictable (and hard to detect) results.

#!/bin/bash
set -o errexit ; set -o nounset

bad_command || do_err_handle
good_command

The above will work fine. errexit only requires that the line pass, as you do with the bad_command && rc=0. Therefore, the above with the 'or' will only run do_err_handle if bad_command fails and, as long as do_err_handle doesn't also 'fail', then the script will continue.