bash: Display the current options for shell or by set built-in.

[hoodedvul]

Take into account the main readme for this section. README first.

$ echo $-
himBHs

If we set an option using the set built-in and then run the command again, notice the x has been added to the shell options.

$ set -x
$ echo $-
+ echo himxBHs

Run the following after to get out of debug mode.

$ set +x