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Full Discussion: Issue with shell script
Top Forums Shell Programming and Scripting Issue with shell script Post 302960664 by Dennis_Ayala on Wednesday 18th of November 2015 09:09:50 AM
Old 11-18-2015
Issue with shell script

I found a post from a user requesting help rounding numbers. The script provided by Scrutinizer works fine most of the time but it errors out when trying to round these numbers:

30224939
50872456
20753012

They have in common, a zero in the second digit from left to right. Can someone help me correct this?

The original response by Scrutinizer is:

Hi, as an alternative to calculus you could use string operations and a simple addition:
•Take the first digit and add 1.
•Replace the rest of the digits with zeroes
•Stick them together.

Here is an example of how this can be achieved. If you find it a little overwhelming, just try your own code. There are many ways to get from a to b.

Code:
while read i ;do
   x=$((i-${i#?}))
   echo $((${x%%0*}+1))${x#?}
done < infile


Thanks,

Dennis
 

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CheckDigits::M10_006(3pm)				User Contributed Perl Documentation				 CheckDigits::M10_006(3pm)

NAME
CheckDigits::M10_006 - compute check digits for Rentenversicherung (DE) SYNOPSIS
use Algorithm::CheckDigits; $rv = CheckDigits('rentenversicherung'); if ($rv->is_valid('65180539W001')) { # do something } $cn = $rv->complete('65180539W00'); # $cn = '65180539W001' $cd = $rv->checkdigit('65180539W001'); # $cd = '1' $bn = $rv->basenumber('65180539W001'); # $bn = '65180539W00' DESCRIPTION
ALGORITHM 1. The letter is replaced with a two-figure number appropriate to the position of the letter in the german alphabet. 2. Beginning left all numbers are weighted with 2,1,2,5,7,1,2,1,2,1,2,1. 3. The the total of the digits of all products is computed. 4. The check digit is sum from step 3 taken modulo 10. METHODS is_valid($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::M10_006(3pm)
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