lptest - Generates the line printer ripple test pattern
lptest [length [count]]
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.
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 suc-
cessive line. Originally created to test printers, the ripple test pattern
is also useful for testing terminals, driving terminal ports during debug-
ging, and for any other diagnostic task where a quick output of randomized
data is needed.
Specifies the command path
Commands: lp(1), lpr(1)