What is the proper way to detect shell exit code when errexit option is set?

Question

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

The following code will stop at bad_command line

#!/bin/bash set -o errexit set -o nounset bad_command # stop here good_command 

I want to capture it, here is my method

#!/bin/bash set -o errexit set -o nounset rc=1 bad_command && rc=0 # stop here [ $rc -ne 0 ] && do_err_handle good_command 

Is there any better or cleaner method

My Answer:

#!/bin/bash set -o errexit set -o nounset if ! bad_command ; then   # error handle here fi good_command 

Answer 1

How about this? If you want the actual exit code ...

#!/bin/sh                                                                        set -e  cat /tmp/doesnotexist && rc=$? || rc=$?                                          echo exitcode: $rc          cat /dev/null && rc=$? || rc=$?                                                  echo exitcode: $rc    

Output:

cat: /tmp/doesnotexist: No such file or directory exitcode: 1 exitcode: 0