INT 1700 – Understanding Operating Systems

Supplemental Lab Assignment 1

Mr. Bugg - Page 1

 

This lab involves a little preparation in the form of creating a file to use. You will use the Notepad to create the file. The name of the file, which you will create on your C: drive is:

           ph.txt

 

Each line of the file contains six items of data: Last name, first name, area code, telephone number, a key word that identifies a category and a short description. The key words are cust for customer, cons for consultant, and vend for vendor.

 

It is important that the data be entered in exact column locations for processing later on. The first is shown with periods marking the number of spaces between items. Press the space bar once for each period.

 

    Jones.....Michele...(747).429-6360..cons.chemist

    Smith    John     (747) 926-2945 vend furniture

    White    Alice    (747) 425-7692 cust Accountant

    Green    Fred     (541) 926-4921 cust math teach

    Black    John     (747) 426-3385 cons mech eng pkg

    Smith    Ed       (541) 835-8747 vend caterer

    Jones    Alison   (747) 429-5584 cons Chem engineer

    Hill     Dave     (747) 463-2000 vend IBM sales

    Jones    James    (747) 636-3541 cust architect

    Black    Alice    (747) 426-7145 cust Elec eng

    1        11       21   27       37  42

 

    Note: the numbers above indicate starting location for

          each column of data.

 

At a C:> prompt, type in the command type to display the file and make sure it is there.

 

Now we will use this file with some of the filter commands.

 

1.        At the prompt, enter find "Wh" ph.txt    

 

           Record what you see: ___________________________________________________

 

2.        Enter sort < ph.txt

           

           What is displayed: ______________________________________________________

 

3.        Enter sort /r < ph.txt

 

           What is displayed? ______________________________________________________

           

INT 1700 – Understanding Operating Systems

Supplemental Lab Assignment 1

Mr. Bugg - page 2

 

4.        Suppose you want to arrange the list by key word. The keyword begins in col. 37.

           Enter sort /+37 < ph.txt

 

           What is displayed? ______________________________________________________

           Enter the same command, but this time redirect the output to a disk file called sortph.txt.

           

5.        The find command is used to locate particular strings within a file.

           Enter  find "cons" ph.txt  to find all the consultants.

           

           What displays? _________________________________________________________

           

6.        The find command can work on more than one file. To illustrate this:

           Make a copy of ph.txt on your disk called ph1.txt using the copy command.

           Enter  find "cons" ph.txt ph1.txt

           

           What displays? _________________________________________________________

           

7.        The find command does not require full words - it uses strings.

           Enter find "eng" ph.txt

 

           What displays? _________________________________________________________

 

8.        Enter  find /i "chem" ph.txt

 

           What displays? _________________________________________________________

 

           What do you think the function of the /i parameter is? __________________________

           (Hint: if you cannot guess, try the command again without the /i parameter)

 

9.        Enter find /v "(747" ph.txt

 

           What displays? _________________________________________________________

 

           What is the apparent function of the /v paramter? ______________________________

 

10.      Enter  find /n "Smith" ph.txt

 

           What displays? _________________________________________________________

 

           What is the function of the /n parameter? _____________________________________