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Abbreviation Full name Explanation
LPD Line Printer Demon Part of the standard
TCP/IP stack (programs).
Two major (incompatible)
variations of LPR/LPD are
generally usedWorks only
in conjunction with LPR.
The sender of a print job
via TCP/IP will be LPR
and the receiver will be
LPD.
LPR Line Printer Requester Part of the standard
TCP/IP stack (programs).
Two major (incompatible)
variations of LPR/LPD are
generally usedWorks only
in conjunction with LPD.
The sender of a print job
via TCP/IP will be LPR
and the receiver will be
LPD.
MVS Multiple Virtual Machine IBM operating system for
mainframes. This is the
most commonly used
operating system for
large corporations.
OS/390 New name for MVS IBM operating system for
mainframes. This is the
most commonly used
operating system for
large corporations. The
only operating system
that supports IBM CMOS
and SYSPLEX technology.
PPD Page Printer Demon Enhanced version of
LPR/LPD. The
enhancement enables bi-
directional
communication when
printing. Not part of the
standard TCP/IP stack
(programs). Used by ida
Psxx, ida RPPC, IBM
Network printers,
PSF/AIX and others.
Works only in conjunction
with PPR. The sender of a
print job via TCP/IP will
be PPR and the receiver
will be PPD.
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