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Hello world/Line printer: Difference between revisions
→{{header|UNIX Shell}}
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# 4. BSD has /dev/lpt0, /dev/lpt1, ... for the parallel ports;
# and /dev/ulpt0, /dev/ulpt1, ... for the USB printers.
# Note that intermingling can occur if two processes write to the device at the
# same time. Using the print spooler method above avoids this problem,
#
echo 'Hello World!' >/dev/lp0
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