Legacy Systems

HP/UX did away with /etc/exports in favor of Sun Microsystem's dfstab mechanism sometime around 11iv2 or 11iv3 (whenever they embraced SYSV if I recall correctly), and as its been years since I've been a Solaris administrator, I'd forgotten the latter's command (thankfully on both Solaris and HP/UX exportfs calls shareall).

But the difficult thing to troubleshoot was HP/UX's exportation of nested symbolic links (there was probably a really good reason, long ago, that no one remembers), and once I figured out where everything was hidden, Solaris's refusal to (which was messing up the mounts for two similar, yet very different reasons).

Heterogeneous environments!