Control Local Displays, 3270 Printers, and Communication Lines

Command Purpose
QUERY rdev Find out the status of files to be printed on the printer rdev.
QUERY GRAF ALL Find out the status of all displays and 3270 printers.
QUERY LINES ALL Find out the status of all communication lines.
VARY ONLINE rdev Make display, 3270 printer, or communication lines rdev available to the system.
ENABLE rdev Enable display, 3270 printer, or communication lines rdev to be used by a z/VM® user.
ATTACH rdev userid vdev Dedicate display, 3270 printer, or communication lines rdev to user userid as virtual device vdev.
DETACH rdev userid Remove display, 3270 printer, or communication lines rdev from user userid.
DISABLE rdev Disable display, 3270 printer, or communication lines rdev from being used by a z/VM user.
VARY OFFLINE rdev Make a display, 3270 printer, or communication lines rdev unavailable to the system.
SET PFnn COPY rdev Set up 3270 printer rdev to copy a display screen with the PFnn key. (This does not apply to communication lines.)
TRANSFER PRT CLASS c|userid1|all to|from all|* userid2 rdr|prt|pun Transfer spool files from the 3270 printer.
SET RDEVICE Define device characteristics.
VARY ONLINE SUBCHANNEL rdev Enable the subchannel for I/O interrupts
VARY OFFLINE SUBCHANNEL rdev Disable the subchannel for I/O interrupts