UNIX in a Nutshell: System V Edition

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/usr/ucb/lptest [length [n]]

Display all 96 printable ASCII characters on the standard output. Characters are printed in each position, forming a "ripple pattern." You can specify the output line length (default is 79) and display n lines of output (default is 200). lptest is useful for testing printers and terminals or for running shell scripts with dummy input.

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Reference: lpstatBook IndexReference: ls

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