/sys$common/syshlp/helplib.hlb SHOW, USERS, Qualifiers, /NODE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /NODE[=(name,...)]

    Displays all interactive, subprocess, and batch users on the
    specified node or nodes. If you enter the /NODE qualifier without
    a value, the qualifier displays all the interactive, subprocess,
    and batch users on the local node.