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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LEARN ABOUT DEBIAN
algorithm::checkdigits::m11_004
CheckDigits::M11_004(3pm) User Contributed Perl Documentation CheckDigits::M11_004(3pm)
NAME
CheckDigits::M11_004 - compute check digits for CPF (BR), Titulo Eleitoral (BR)
SYNOPSIS
use Algorithm::CheckDigits;
$cpf = CheckDigits('cpf');
if ($cpf->is_valid('043.033.407-90')) {
# do something
}
$cn = $cpf->complete('043.033.407-');
# $cn = '043.033.407-90'
$cd = $cpf->checkdigit('043.033.407-90');
# $cd = '90'
$bn = $cpf->basenumber('043.033.407-90');
# $bn = '043.033.407-'
DESCRIPTION
ALGORITHM
1. From left to right all digits are multiplied with their position in the sequence.
2. The sum of all products is computed.
3. The sum of step 2 is taken modulo 11.
a) If the result is 0 or 1 the checkdigit is 0
b) otherwise the checkdigit is 11 minus the result.
4. The first checkdigit is appended to the number and step 1 to 3 are repeated.
METHODS
is_valid($number)
Returns true only if $number consists solely of numbers and the last digit is a valid check digit according to the algorithm given
above.
Returns false otherwise,
complete($number)
The check digit for $number is computed and concatenated to the end of $number.
Returns the complete number with check digit or '' if $number does not consist solely of digits and spaces.
basenumber($number)
Returns the basenumber of $number if $number has a valid check digit.
Return '' otherwise.
checkdigit($number)
Returns the checkdigit of $number if $number has a valid check digit.
Return '' otherwise.
EXPORT
None by default.
AUTHOR
Mathias Weidner, <mathias@weidner.in-bad-schmiedeberg.de>
SEE ALSO
perl, CheckDigits, www.pruefziffernberechnung.de.
perl v5.10.0 2008-05-17 CheckDigits::M11_004(3pm)