Shell Programming Homework #1

You will create a list and write a script to lookup a row in your list. Your program will ask the user for a searchword and then display at least one matching column in a list you created.

• Create your list file:
• First, think of something you might want to keep a list of. It needs at least 2 columns. You might want actors and their movies, or games and the device you use to play them. Please don't choose CDs because that is what your book chose. I am expecting you to use pages 87 and 88 in your book as a guide.
• Use vi to create a file of this list with a space separating each column. If your data has more than one word, use _ instead of space. We will deal with spaces inside strings later.
• Create a script that does the following:
• ask the user to enter a search word
• tell the user how many times that word was found in your list, (To do that: use grep to search and pipe that to wc -l to count the number of lines in the file.)
• Say "sorry it was not found" if you cannot find the word in your list. If the wc -l is 0, you know it was not found.
• Tell the user all the columns that matched for all the rows that matched ( While sed will do this easily, I want you to instead use the script file redirection to a loop to read through the file , parsing each line.)
• to read the file in a loop use the following syntax:
  while read col1 col2 (as many as you have)
  do
  # echo the label and value here
  done < yourListFile
• Extra help:
• Example of a working file read: wget http://home.adelphi.edu/~pe16132/csc271/note/scripts/numberit
• Tracing to see the variable values as it executes, run as bash -x yourShellFilename
• If you are getting odd read results, you might have \r carriage returns inside your file. See that with "od -c yourShellFilename | more " and then fix it in notepad++ with edit / eol conversion / unix format.

For example:

My cd list:

• bat_out_of_hell meatloaf
• heaven reba_macintire

My program run #1:

• What word are you looking for: church
• Sorry, church was not found

My program run #2:

• What word are you looking for: meat
• There was 1 meat found
• Album: bat_out_of_hell
• Artist: meatloaf