OPS705 Lab 3 (2221)

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Purpose / Objectives of Lab 3

In this lab, you will practice working with the Linux command line by manipulating the file system in two separate investigations.

If you encounter technical issues, please contact your professor via e-mail or in your section's Microsoft Teams group.

Minimum Requirements

Before beginning, you must have:

  1. Successfully completed Lab 2
  2. Watched the Week 3 video lecture
  3. Read through the Week 3 slides, and have them handy as a reference for concepts
  4. Your Seneca Azure login credentials
  5. Your linked mobile device for 2FA

INVESTIGATION 1: Create the Directory Structure

Figure 1. Square icons are directories, oval icons are empty text files.

In this investigation, you'll create the directory structure and text files you see in the tree diagram below. You will do so entirely on the command line using the utilities and command provided to you in the Week 2 lecture.

You work will be done entirely in your home directory.

To begin:

  1. Start your CentOS Linux VM in Azure (this may take a few minutes)
  2. Connect to the VM remotely using SSH
  3. Navigate to your home directory with this command: cd ~
  4. In your home directory, recreate the yellow portion of the directory tree in Figure 1. (yourusername should be your own username home folder that already exists.)
  5. Using vim, create a new file called yourusername_lab3.txt in your home directory, and add the following text: My name is insertFullName, and I've completed Investigation 1.


In this investigation, you're tasked with moving a set of existing files. You will download and run a script, which will create a set of files in ~/tmp. It is then your job to create the directory structure seen in Figure 2, and move the files from ~/tmp to their proper location according to the file tree diagram. Do not delete and recreate files, only move files, and do not delete your work from Investigation 1.

Figure 2. Square icons are directories, oval icons are script-generated text files.
  1. On your Linux VM, from your home directory, download script for this lab with the following command: wget https://raw.githubusercontent.com/ops705/labs/main/lab3_generate.sh
  2. Give the script execute permissions: chmod u+x ~/lab3_generate.sh
  3. Run the script: ~/lab3_generate.sh
  4. Check that the files 13-17 have been created in ~/tmp (These must come from the script, do not create them yourself)
  5. Using Figure 2 as a model, create the ~/shared directory structure
  6. Using Figure 2 as a model, move the files from ~/tmp to their proper location in ~/shared

Lab Submission

  1. In your home directory, download the check script for this lab: wget https://raw.githubusercontent.com/ops705/labs/main/lab3_check.sh
  2. Give the script execute permissions: chmod u+x ~/lab3_check.sh
  3. Run the script: ~/lab3_check.sh

Submit to Blackboard's Lab Submission section full-desktop screenshots (PNG/JPG) of the following:

  1. The entire output of the lab check script in a passed state.

Your professor will review your VMs directly; the screenshots are a backup in case of catastrophic issues.

Your professor will not check your lab until the screenshots have been submitted.

Make sure to fully stop your VMs when you're done!