CS155 HW4: Area Codes

Summary

In this assignment, you will write a bash script called acode which will tell you telephone area code information. The file ~cs155/pub/area-codes contains this information.

Sample runs, where `%` is my prompt:

    % ./acode
    usage: ./acode <query> ...
    % ./acode 303
    Area codes for "303":
       303 Central Colorado: Denver (see 970, also 720 overlay)
    % ./acode 303 970
    Area codes for "303":
       303 Central Colorado: Denver (see 970, also 720 overlay)
    Area codes for "970":
       970 N and W Colorado (part of what used to be 303)
    % ./acode Denver
    Area codes for "Denver":
       303 Central Colorado: Denver (see 970, also 720 overlay)
       720 Central Colorado: Denver (overlaid on 303)
    % ./acode Wonderland
    Area codes for "Wonderland":
    % ./acode enver
    Area codes for "enver":
       303 Central Colorado: Denver (see 970, also 720 overlay)
       720 Central Colorado: Denver (overlaid on 303)
    % ./acode e
    Area codes for "e":
       that gave 356 matches

Requirements

This must be a pure bash script, and not use any other languages such as perl, awk, or csh.
You may use programs such as grep, sed, sort, etc.
The first line of your script must be:
#! /bin/bash
Your program must use the file ~cs155/pub/area-codes to obtain area code information. Don’t use a copy—use that file. It’s probably out of date—that’s ok.
The data file is not sorted. However, your output must be, as shown above.
You must emit the error message, as shown above, when no arguments are given.
As shown in the last example, if there are more than ten results, just say how many results there are, and do not show the results themselves.
If the query is a three-digit number, just look for that areacode. Don’t look for every line that happens to contain those three digits. See the example for 303, above. It didn’t show area code 720, even though 720 mentions 303.
Results must be indented three spaces, as shown above.
The program may be invoked with any number of arguments, mixing numeric area codes and strings.
We will only test your program with boring strings, and not regular expressions.
Case matters: searching for DENVER should yield no results.

How to submit your homework:

Follow the directions on the homework page.

How to receive negative points:

Turn in someone else’s work.

CS155: Introduction to Unix

Fall 2013

HW 4

CS155 HW4: Area Codes

Summary

Sample runs, where `%` is my prompt:

Requirements

How to submit your homework:

CS155: Introduction to Unix

Fall 2013

HW 4

CS155 HW4: Area Codes

Summary

Sample runs, where % is my prompt:

Requirements

How to submit your homework:

Sample runs, where `%` is my prompt: