buffer - 1.19-12+b1 main

Buffer implements double buffering and can be used to keep backup tapes
streaming or printers printing. It can also be used to convert a data
stream to a given output blocksize.
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Buffer uses shared memory to convert a variable input data rate to a
constant output data rate. It is typically used in a pipe between a backup
program and the tape device, but there are also other applications like
buffering printer data in lpd's input filter.