lptest(8) System Manager's Manual lptest(8)NAME
lptest - Generates the line printer ripple test pattern
SYNOPSIS
lptest [length [count]]
FLAGS
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.
DESCRIPTION
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 charac-
ter-column on each successive line. Originally created to test printers, the ripple test pattern is also useful for testing terminals,
driving terminal ports during debugging, and for any other diagnostic task where a quick output of randomized data is needed.
FILES
Specifies the command path.
RELATED INFORMATION
Commands: lp(1), lpr(1) delim off
lptest(8)
Check Out this Related Man Page
pbmpage(1) General Commands Manual pbmpage(1)NAME
pbmpage - create a one page test pattern for printing
SYNOPSIS
pbmpage [-a4] test_pattern
DESCRIPTION
pbmpage generates a one page test pattern to print on a sheet of paper, for use in calibrating a printer. The test pattern in is PBM for-
mat.
pbmpage produces an image intended for 600 dots per inch printer resolution.
If you are printing on an HP PPA printer, you can convert the output of this program to a stream that you can feed to the printer with pbm-
toppa.
Bear in mind that when you print the test pattern, you are testing not only the printer, but any converter or driver software along the
printing path. Any one of these components may adjust margins, crop the image, erase edges, and such.
If, due to addition of margins, the printer refuses to print the image because it is too big, use pnmcut to cut the right and bottom edges
off the test pattern until it is small enough to print.
test_pattern is the number of the test pattern to generate, as follows. The default is 1.
1 A grid ruled in numbers of pixels. The outermost rules are exactly at the edges of the paper.
2 A vertical line segment, one pixel wide, extending 1/2" up from the exact center of the page.
3 Two diagonal line segments, one starting at the upper left corner of the page, the other starting from the lower left corner of the
page. Both extend 1/2" toward the center of the page at 45 degrees.
OPTIONS -a4 Generate an image for A4 (European) paper. Without this option, pbmpage generates an image for US standard paper (8 1/2" wide x 11"
high).
SEE ALSO pbmtoppa(1), pnmcut(1), pbm(5)AUTHOR
Tim Norman. Copyright (C) 1998. Licensed under GNU Public License
Manual page by Bryan Henderson, May 2000.
01 May 2000 pbmpage(1)
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