IT 251 Milestone Four Guidelines and Rubric

Overview: Scripting is a very important skill to have when working as a *NIX system administrator and one that will make your day much less tedious and much more efficient. This milestone will have you work with basic scripting much in the same way you would within the information technology profession.

Prompt: For this milestone, you will complete several tasks assigned by your manager within the *NIX environment.

Specifically, the following critical elements must be addressed in this milestone:

1. Scripting
   One of your coworkers needs help with a script that he has been working on but cannot seem to get working. He has copied his bad script, superscript.sh, into your home directory under the scripts directory (~/scripts/superscript.sh). After correcting the script, build a simple script of your own to assist in retrieving user info from SLASH/etc/passwd and SLASH/etc/group to make user administration simpler.
   
   
   1. Correct the Script: Correct your coworker’s script, make the script executable (owner and group, not world), execute the corrected script, take a screenshot of the entire script code, take a screenshot of the executed script output, and describe each correction you made to the script to get it working and explain why you made those changes.
2. Script code (screenshot):
   
   
3. Executed script output (screenshot):
   
   
4. Description of each correction made to the script and why:

• User Administration Script: Create a script that will assist in retrieving user information and meet the following requirements:
• Script will be built in your ~/scripts directory and should be named userlookup.sh.
• On the second line from the top of the script, below the #!, add a commented line with your name, course, and date followed by a blank newline.
• Build your script so it takes the supplied first name of a user and returns the indicated output. The script should retrieve information for the user the script is run against and an error message if no user is found. Users to test will be Bob, Henry, and Notaperson. Bob and Henry should return the correct information and Notapersonshould return an error message of no such person found (as there is no Notaperson user).
  • To run script input format:

sh userlookup.sh bob

sh userlookup.sh henry

sh userlookup.sh notaperson

• Expected output format (will differ based on the user and will display an error when a user is not found):

bob:x:1001:1001:Ops:/home/bob:/bin/bash

bob:x:1001:

ops:x:1004:bob, franks

• You may want to test various commands in the shell itself to get the output you are looking for and then move the pieces that prove to work as expected into the script to get the desired final output.
  • Set the permissions on userlookup.sh to owner and group executable (not world) and execute the script three times—once for Bob, Henry, and Notaperson—in the format shown above.
  • Screenshot the code for your entire script.
  • Screenshot the outputs from executing the script all three times.
  • Write a couple of sentences detailing your thought process and reasoning for utilizing the commands you used within your script.
• Screenshot the code for your entire script and paste the screenshot(s) here:
  
  

• Screenshot the outputs from executing the script all three times and paste the screenshot(s) here:
  
  

• Write a couple of sentences detailing your thought process and reasoning for utilizing the commands you used within your script:

Work Verification: Take a screenshot (or multiple screenshots if needed) that captures the output of the pwd and history commands. Paste these screenshots here:

Rubric

Guidelines for Submission: Be sure to read the primary Final Project Guidelines and Rubric document in full, as it contains the context that each milestone is based within and provides the complete picture of the final project that each milestone builds on. Your answers will be inserted directly into this document and saved. Tasks marked in red indicate that an answer and/or screenshot is expected.

Instructor Feedback: This activity uses an integrated rubric in Blackboard. Students can view instructor feedback in the Grade Center. For more information, review these instructions.

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