The Question is:
Does VMS have an equivalent of the Unix $PATH?
The Answer is :
The OpenVMS Wizard would prefer to receive a feature request rather
than a feature comparision with another platform -- the latter often
assumes a detailed knowledge of the other platform, knowledge which
may or may not be available. Features can and often are implemented
differently, as well.
In this particular case, OpenVMS provides a mechanism similar to the
UNIX PATH environment variable; a mechanism which permits the user
to select a series of directories through which a search for matching
command procedures and matching executable images is performed. The
match is based on user input, on existing symbols and command verbs,
and on the contents of the specified directories.
This mechanism is formally known as an Automatic Foreign Command
For introductory details on this mechanism and on standard foreign
command symbols and the associated argument-passing mechanisms available
to application images, please search for PATH or for DCL$PATH in the
OpenVMS Frequently Asked Questions (FAQ), and (if you require any
additional details) please then see the details of the Automatic
Foreign Command mechanism available within the OpenVMS documentation.