freebsd man page for lptest

LPTEST(1)						    BSD General Commands Manual 						 LPTEST(1)

NAME
     lptest -- generate lineprinter ripple pattern

SYNOPSIS
     lptest [length] [count]

DESCRIPTION
     The lptest utility 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
     A lptest utility appeared in 4.3BSD.

BSD
								 December 30, 1993							       BSD