4.3BSD-Reno/share/man/cat1/lptest.0

Compare this file to the similar file:
Show the results in this format:
LPTEST(1)		    UNIX Reference Manual		     LPTEST(1)

NNAAMMEE
     llpptteesstt - generate lineprinter ripple pattern

SSYYNNOOPPSSIISS
     llpptteesstt [_l_e_n_g_t_h] [_c_o_u_n_t]

DDEESSCCRRIIPPTTIIOONN
     LLpptteesstt 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 pur-
     poses, or any other task where a quick supply of random data is needed.

     The _l_e_n_g_t_h argument specifies the output line length if the the default
     length of 79 is inappropriate.

     The _c_o_u_n_t argument specifies the number of output lines to be generated
     if the default count of 200 is inappropriate.  Note that if _c_o_u_n_t is to
     be specified, _l_e_n_g_t_h must be also be specified.

HHIISSTTOORRYY
     LLpptteesstt appeared in 4.3 BSD.