Test #1 Shell Programming

Part II Shell Programming - Points: 27  (5 of 15%)

Write code for an executable shell script that will do the
following actions, in the exact order given below.

Only Step Comments are Required:
     Put only a one-line comment containing the step number
     in front of the executable code for steps 2 and
     greater.  No other comments are needed.
            ________________________________________

  1.   [Points: 2] Start your script with the comment line
       that tells the kernel to execute this script using
       the standard Bourne shell.  Include the standard
       shell option that checks for undefined variables.

  2.   [Points: 1] Display the current host name of this
       computer.  (Remember to number all your steps!)

  3.   [Points: 1] Change directories to your home
       directory.

  4.   [Points: 2] Delete recursively any directory named
       test1. (BONUS mark: Include an option to suppress
       error messages if the directory does not exist.)

  5.   [Points: 1] Create a new directory named test1 in the
       current directory.

  6.   [Points: 2] Create a new directory named test2 in the
       test1 directory.

  7.   [Points: 2] Make subdirectory test2 the current
       directory.

  8.   [Points: 1] Display on the screen the name of the
       current directory.  (The display will show that you
       are in the test2 subdirectory of the test1
       directory.)

  9.   [Points: 1] Put the current date into a file named
       date.txt in the current directory.

  10.  [Points: 1] Copy the date.txt file to a file named
       copy.txt in the parent directory.

  11.  [Points: 1] Rename the date.txt file to have the name
       old.txt.

  12.  [Points: 1] Change directories to the parent
       directory.  (The current directory is now the test1
       directory.)

  13.  [Points: 3] Create a file in the current directory
       named mypasswd.txt that contains the first eight and
       last three lines of the Unix password file.  (Hint:
       Use two simple commands to create this file.)

  14.  [Points: 3] Look for lines containing the string root
       in the mypasswd.txt file, and save the lines into the
       file rooters.txt in the test2 subdirectory.

  15.  [Points: 3] Count the number of lines (only lines) in
       all the non-hidden files in the test2 subdirectory.

  16.  [Points: 2] Display the exact message: It's
       "finished" now. (Make sure all the punctuation
       appears in the output.)

Did you read the whole test?  For full marks, remember to
use comments to number your steps!
                          - FIN -