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Complex Pipeline/Redirection/Regular Expression problem
Post 90924 by netmaster on Monday 28th of November 2005 11:33:43 PM
11-29-2005
Complex Pipeline/Redirection/Regular Expression problem
This is a very hard unix command which I could not perform..... 
......here it is:
The file ~unx122/public/data.txt contains over 18,000 lines of text. Here are the first ten lines of the file:
pagination 20657 2740 28416 31090 18145
shiner 1695 2507 9964 14512 13122
cool 29210 23832 22861 25037 18722
entertain 16186 23873 5049 3781 15735
sandwiches 9407 61 10817 7342 18224
sustenance 27174 8344 331 18238 25000
humanitarian 29733 13594 5573 24760 20213
Gus 10371 20643 22256 28933 7187
promoting 24678 31046 5759 7005 29626
ethereal 4963 15542 12202 23911 31595
Each line contains a word and five numbers, each separated by spaces. There are no spaces or punctuation marks in any of the words; each word consists of only upper- and lower-case letters. All of the numbers are whole numbers (no decimals and no negative numbers). There are no leading zeros (extra zeros added to the start of the numbers).
*****************************************************
From the file ~unx122/public/data.txt, select all of the lines that
have a word in column one that starts and ends with vowels
and have values between 1000 and 9999 in the third column.
Sort these lines in reverse order according to column 3, then
select lines 15 through 37. Finally, put these lines in
normal order according to column 1 and write them to the file
~/uli101_a2_output.txt (overwrite any data already in that file).
Create a command pipeline to perform this task. In the file ~/uli101_assignment2, place an appropriate bash shebang line, then your command pipeline.
Definitions
Here are the definitions of some of the terms used in the problem description:
Vowel - one of the letters: a, e, i, o, or u.
Consonant - any letter that is not a vowel.
Character - any letter,number, digit, space, or punctuation character.
Upper-Case - CAPITAL LETTERS
Lower-Case - non-capital letters
Odd digit - one of these digits: 1, 3, 5, 7, or 9.
Even digit - one of these digits: 0, 2, 4, 6, or 8.
Odd number - A number which is not evenly divisible by 2 (a number
ending in an odd digit).
Even number - A number which is evenly divisible by 2 (a number
ending in an even digit).
Normal order - Ascending order (lowest to highest value).
Use a numeric sort for numbers, or an ASCII sort for text.
Reverse order - Descending order (highest to lowest value).
Use a numeric sort for numbers, or an ASCII sort for text.
......here it is:The file ~unx122/public/data.txt contains over 18,000 lines of text. Here are the first ten lines of the file:
pagination 20657 2740 28416 31090 18145
shiner 1695 2507 9964 14512 13122
cool 29210 23832 22861 25037 18722
entertain 16186 23873 5049 3781 15735
sandwiches 9407 61 10817 7342 18224
sustenance 27174 8344 331 18238 25000
humanitarian 29733 13594 5573 24760 20213
Gus 10371 20643 22256 28933 7187
promoting 24678 31046 5759 7005 29626
ethereal 4963 15542 12202 23911 31595
Each line contains a word and five numbers, each separated by spaces. There are no spaces or punctuation marks in any of the words; each word consists of only upper- and lower-case letters. All of the numbers are whole numbers (no decimals and no negative numbers). There are no leading zeros (extra zeros added to the start of the numbers).
*****************************************************
From the file ~unx122/public/data.txt, select all of the lines that
have a word in column one that starts and ends with vowels
and have values between 1000 and 9999 in the third column.
Sort these lines in reverse order according to column 3, then
select lines 15 through 37. Finally, put these lines in
normal order according to column 1 and write them to the file
~/uli101_a2_output.txt (overwrite any data already in that file).
Create a command pipeline to perform this task. In the file ~/uli101_assignment2, place an appropriate bash shebang line, then your command pipeline.
Definitions
Here are the definitions of some of the terms used in the problem description:
Vowel - one of the letters: a, e, i, o, or u.
Consonant - any letter that is not a vowel.
Character - any letter,number, digit, space, or punctuation character.
Upper-Case - CAPITAL LETTERS
Lower-Case - non-capital letters
Odd digit - one of these digits: 1, 3, 5, 7, or 9.
Even digit - one of these digits: 0, 2, 4, 6, or 8.
Odd number - A number which is not evenly divisible by 2 (a number
ending in an odd digit).
Even number - A number which is evenly divisible by 2 (a number
ending in an even digit).
Normal order - Ascending order (lowest to highest value).
Use a numeric sort for numbers, or an ASCII sort for text.
Reverse order - Descending order (highest to lowest value).
Use a numeric sort for numbers, or an ASCII sort for text.
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LEARN ABOUT DEBIAN
algorithm::checkdigits::m43_001
CheckDigits::M43_001(3pm) User Contributed Perl Documentation CheckDigits::M43_001(3pm) NAME
CheckDigits::M43_001 - compute check digits for Code-39 SYNOPSIS
use Algorithm::CheckDigits; $c39 = CheckDigits('code_39'); if ($c39->is_valid('AB-123K')) { # do something } $cn = $c39->complete('AB-123'); # $cn = 'AB-123K' $cd = $c39->checkdigit('AB-123K'); # $cd = 'K' $bn = $c39->basenumber('AB-123K'); # $bn = 'AB-123' DESCRIPTION
ALGORITHM 1. After replacing all non numeric letters with their respective values, the sum of all numbers is computers 2. The checkdigit is the sum from step 1 taken modulo 43. METHODS is_valid($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::M43_001(3pm)