- Lab
- A Cloud Guru
Using Octal Permissions to Set up a Collaboration Area
In a multi-user environment like Linux, there will come a need to have a specific area set aside for different uses to collaborate. This lab will walk through the process and make sure you understand how different permissions can work together.
Path Info
Table of Contents
-
Challenge
Ensure /opt/collab Can Be Accessed by the Other Managers but Not Will
The first thing we need to do is make sure Bob, Adam, and Sally are all members of the same group. This will allow us to use octal permissions on the group section to allow access.
If we run
id bob,id adam, andid sally, we'll see that they're all members of themanagersgroup.So we can run
chown bob.managers /opt/collabandchmod 770 /opt/collabto lock the directory down to Bob and themanagersgroup. -
Challenge
Ensure Files Written Can Be Read by All Users
As
bob,adam, andsally, touch a file in/opt/collaband then try andcatall of those files as those 3 users.Adam failed. Let's look at why.
The permissions on
adam's file are 600, so his user can access the file but the other managers can't. If we checkadam's.bash_profilewe see his umask is set incorrectly for this task. Edit his.bash_profileand set his umask to 026 and try this again.
What's a lab?
Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.
Provided environment for hands-on practice
We will provide the credentials and environment necessary for you to practice right within your browser.
Guided walkthrough
Follow along with the author’s guided walkthrough and build something new in your provided environment!
Did you know?
On average, you retain 75% more of your learning if you get time for practice.
