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1.2 Data Files for the Examples

Many of the examples in this Web page take their input from two sample data files. The first, mail-list, represents a list of peoples’ names together with their email addresses and information about those people. The second data file, called inventory-shipped, contains information about monthly shipments. In both files, each line is considered to be one record.

In the data file mail-list, each record contains the name of a person, his/her phone number, his/her email-address, and a code for their relationship with the author of the list. An ‘A’ in the last column means that the person is an acquaintance. An ‘F’ in the last column means that the person is a friend. An ‘R’ means that the person is a relative:

Amelia       555-5553     amelia.zodiacusque@gmail.com    F
Anthony      555-3412     anthony.asserturo@hotmail.com   A
Becky        555-7685     becky.algebrarum@gmail.com      A
Bill         555-1675     bill.drowning@hotmail.com       A
Broderick    555-0542     broderick.aliquotiens@yahoo.com R
Camilla      555-2912     camilla.infusarum@skynet.be     R
Fabius       555-1234     fabius.undevicesimus@ucb.edu    F
Julie        555-6699     julie.perscrutabor@skeeve.com   F
Martin       555-6480     martin.codicibus@hotmail.com    A
Samuel       555-3430     samuel.lanceolis@shu.edu        A
Jean-Paul    555-2127     jeanpaul.campanorum@nyu.edu     R

The data file inventory-shipped represents information about shipments during the year. Each record contains the month, the number of green crates shipped, the number of red boxes shipped, the number of orange bags shipped, and the number of blue packages shipped, respectively. There are 16 entries, covering the 12 months of last year and the first four months of the current year.

Jan  13  25  15 115
Feb  15  32  24 226
Mar  15  24  34 228
Apr  31  52  63 420
May  16  34  29 208
Jun  31  42  75 492
Jul  24  34  67 436
Aug  15  34  47 316
Sep  13  55  37 277
Oct  29  54  68 525
Nov  20  87  82 577
Dec  17  35  61 401

Jan  21  36  64 620
Feb  26  58  80 652
Mar  24  75  70 495
Apr  21  70  74 514

The sample files are included in the gawk distribution, in the directory awklib/eg/data.


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