sysexits.h was originally the codes used to communicate from the mail delivery agent to the parent mail daemon. These codes are still used on modern email syst

sysexits.h was originally the codes used to communicate from the mail delivery agent to the parent mail daemon. These codes are still used on modern email systems like Postfix. IMO, it is/was a mistake to shoehorn sysexits.h in to anything but that mail-delivery usecase.