02-28-2001
I am having difficulty sending a control sequence ESC&l5H (print to middle tray) to a HP printer (lp4).It is ignoring the command. I am using the following syntax in an executable file :
echo "'/033'&l5H" > /dev/lp4
lp -dlp4 filename
a) Is /033 'escape' ?
b) What is the correct syntax ?
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WHACK(1) General Commands Manual WHACK(1)
NAME
whack - mangle requests to a printer or damage a printer
SYNOPSIS
whack [-h | -v] [-i] [-w] ids
whack [-j] [-v] [-s] [-w] printers
DESCRIPTION
whack mangles line printer requests or damages line printers. When the first form of the command is used, the printed output of the job is
mangled as specified by the options. When the second form of the command is used, the printer itself is damaged as specified by the
options.
OPTIONS
-h Horizontal. Make the output run across the page horizontally, ignoring linefeeds and other form movement characters or embedded
commands.
-v Vertical. Make the output run vertically in one column (the current column) down the paper, ignoring any form movement characters
or embedded commands.
-i ISO mode. Select, at random, a different ISO code set to use while printing the rest of the job.
-w Write a taunting message on the user's terminal after the jobs have been whacked. If the user is not logged in locally, then
mail will be sent instead.
-j Jam. Self-explanitory.
-v Voltage surge. Send a voltage spike down the transmit lead(s) of the printer. Physical contact with the printer should be
avoided while using the -v option.
-s Spit. Causes the printer to rapidly eject it's paper load into the output bin. Depending upon the speed of the ejection, a few
characters could actually print on each page.
FILES
/etc/termcap
HISTORY
Written by Eric L. Pederson <eric@bofh.org.uk>.
28 September 1995 WHACK(1)