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→LAB PREPARATION
| |[[Image:ssd.png|thumb|left|175px|<b>Solid State Drive</b><br>Minimum Size: 250GB]]
| [[Image:log-book.png|thumb|left|100px|<b>Lab Logbook</b><br>[[:Media:OPS245-Logbook-Online.doc|(lab 1Click Here to Download)]]]]
| style="padding-left:15px;" |Package Management
*'''Name:''' c7host
*'''Boot media / Installation:''' CentOS 7 Full Install DVD (image file)
:::Use the links on the [https://mirror.senecacollege.ca/centos/7/isos/x86_64/CentOS-7-x86_64-DVD-2009.iso Download at Seneca Lab]:::[OPS245 | Course https://mirror.netflash.net/centos/7.9.2009/isos/x86_64/CentOS-7-x86_64-DVD-2009.iso Download from Home Page]] to download the required ISO file.
*'''Disk space:''' 238GB
*'''CPUs:''' 1 CPU, 4 cores ('''Do not mix and match! Always use 1 CPU, and multiples of 2 for cores.''')
<ol>
<li value="7">Using output redirection, send the output from each of the following commands to a file called '''report.txt'''. Note that when you are done, you should have one file that has output from all of the commands.
<ul>
<li>date +'%A %B %d, %Y (%I:%M %p)'</li>
:'''Perform the Following Steps:'''
<ol>
<li>Install Check if python3 is installed on your Centos Host machine. Open a terminal and type:</li><code style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;font-weight:bold;">which python3</code><li>The output should of the previous command should show python3 is already installed. If it is not, install python3 on your Centos Host machine.</li>
<code style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;font-weight:bold;">
sudo yum install python3
</code>
<li><ul><li>Create a new file in your '''~/bin ''' directory called '''myreport.py'''</li>
<li>Since we haven't covered if statements in python yet, we won't be able to check if the user running the script is root. For now, we will have to trust ourselves to remember to use elevated permissions to run this script. We will correct this in lab 2.</li>
</ul></li>
<li>Add a line that will print out the heading '''System Report'''<br />
<code style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;font-weight:bold;">
print('System Report\n')
</code>
</li>
<li>Save your script and run it. Does it work?</li>
<li>You'll notice that the python script is currently sending its output to your terminal. Since we haven't covered how to write to a file yet, this is ok for now. Just use output redirection on the command line when you run the script to send the output to '''~/bin/pythonreport.txt'''.</li>
<li>Add Open your script in a text editor (like Vi) again, and add the following lines below the print statement:</li><pre style="color:#3366CC;font-family:courier;font-size:.9em;margin-left:20px;># Import the Operating System moduleimport os # Print a heading for the date command outputprint('Current Date:') # Call the date command using the os moduleos.system("date +'%A %B %d, %Y (%I:%M %p)'")</pre><li>Save your script and run it again. Observe the output. What do you think the os.system command did?</li><li>Based on the above example and output, add the extra commands for your python script to also output (with appropriate headings):
<ul>
<li>The hostname of the machine.</li>
<li>The kernel version.</li>
# Make certain that your '''c7host''' VM is running, open the Bash Shell terminal.<br><br>
# Change to the '''~/bin''' directory.<br><br>
#Download the checking script by issuing the following Linux command:<br><b><code><span style="color:#3366CC;font-size:1.2em;">wget https://ictraw.senecacollegegithubusercontent.cacom/~ops245OPS245/labs/main/lab1-check.bash</span></code></b><br><!--For Andrew's sections use this script instead:<br><b><code><span style="color:#3366CC;font-size:1.2em;">wget http://littlesvr.ca/ops245/lab1-check-andrew.bash</span></code></b>--><br>
# Give that downloaded shell script file execute permissions (for the file owner).<br><br>
# Run the shell script using '''sudo ''' and if there are any warnings, make fixes and re-run shell script until you receive a "congratulations" message.<br><br>
#Arrange evidence (command output) for each of these items on your screen:
::<span style="color:green;font-size:1.5em;">✓</span> Proof that c7host VM is set for '''virtualization''' (Refer to: '''INVESTIGATION 1''' - '''Part 1''' - '''Step #29''')
= Practice For Quizzes, Tests, Midterm & Final Exam =
# Define the term Virtual Machine.
# List the major screens (steps) in the installation of Centos7 CentOS 7 full install DVD.
# What key-combination is used to toggle the view of your running VM from "window-mode" to "full-screen-mode"?
# List the steps for setting SELinux to permissive mode.
