NAME
lptest —
generate lineprinter ripple
pattern
SYNOPSIS
DESCRIPTION
lptest writes the traditional "ripple test" pattern
on standard output. In 96 lines, this pattern will print all 96 printable
ASCII characters in each position. While originally created to test printers,
it is quite useful for testing terminals, driving terminal ports for debugging
purposes, or any other task where a quick supply of random data is needed.
The
length argument specifies the output line length if
the default length of 79 is inappropriate.
The
count argument specifies the number of output lines to
be generated if the default count of 200 is inappropriate. Note that if
count is to be specified,
length
must be also be specified.
HISTORY
lptest appeared in
4.3BSD.