ASSIGNMENT 2

Due August 8, Noon

Purpose:

To gain experience in writing shell scripts that incorporate building pipelines with filters such as sed, awk, sort and tr.

Assignment:

Write a C-shell script called hw2 and place it into your subdirectory 20ECES620801. Make the file executable to yourself. Suppose that we have a file containing records on customers, where each record is of the form:

Assume that each of the above fields is on a new line and that different records are separated by a blank line. A sample input file may look like:

   Smith
 Joe
561-9067
 472     Oak Drive
Cleveland
OH
 230027,
       
Berry
MAry,
945-9090
909 Howdy   Doody Dr .
Cincinnati
OH
 45238  

AGRAWAL
 JOHN
767-3313
 131 Elm Street , Apt. 5
Chicago
 IL, 
78909

Berry
MAry,
945-9090
909 Howdy Doody Drive
Cincinnati
OH
 45238  

          etc.

Your script should "clean-up" these records, i.e.,

remove trailing commas,
eliminate all leading and trailing blanks,
squeeze multiple blanks into one,
remove blanks before a comma or period,
convert all lower case characters to upper case

and convert them to "address labels", where each label is of the following form:

e.g.,

JOHN AGRAWAL
767-3313
131 ELM STREET, APT. 5
CHICAGO, IL 78909

MARY BERRY
909 HOWDY DOODY DR.
CINCINNATI, OH 45237

JOE SMITH
472 OAK DRIVE
CLEVELAND, OH 230027

etc.

Further, these labels must be SORTED with DUPLICATES REMOVED.

Your script hw2 should have one parameter for the input file.

HINT: Use filters sed and tr to clean each record up and convert each record into a single line, with the fields separated by a colon (see text pages 140-141). Use the filter sort to sort records and remove duplicates. Then use awk to print out the labels in the desired form.