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Command: lptest | Section: 8 | Source: Digital UNIX | File: lptest.8.gz
lptest(8) System Manager's Manual lptest(8)
NAME
lptest - Generates the line printer ripple test pattern
SYNOPSIS
lptest [length [count]]
FLAGS
Specifies the output line length when the 79-character default line
length is inappropriate. Specifies the number of output lines to be
generated when the default 200-line length is inappropriate. When
count is specified, length must also be specified.
DESCRIPTION
The lptest command writes a traditional ripple test pattern to the
standard output. In 96 lines, a pattern containing all 96 printable
ASCII characters in each column position of the line is printed. In the
pattern, each printed character is displaced rightward one character-
column on each successive line. Originally created to test printers,
the ripple test pattern is also useful for testing terminals, driving
terminal ports during debugging, and for any other diagnostic task
where a quick output of randomized data is needed.
FILES
Specifies the command path.
RELATED INFORMATION
Commands: lp(1), lpr(1) delim off
lptest(8)