lptest — generate lineprinter ripple pattern

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 also be specified.

lptest appeared in 4.3BSD.

Debian                                            May 31, 2007                                         LPTEST(1)

       lptest — generate lineprinter ripple pattern

lptest [length] [count]