Lab
A Cloud Guru

Working with Linux Directory Permissions

In this lab, we'll be working with directory permissions on a Linux host. We'll start by creating some groups and directories, and then set up permissions to only allow each group to access its own directory.

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Path Info

Level

Beginner

Duration

30m

Published

Apr 15, 2019

Challenge

Create user groups.
1. There are four groups to be created:
  - accounting
  - engineering
  - management
  - hr
2. Use the sudo groupadd -g #### [groupname] command:
  - sudo groupadd -g 1111 accounting
  - sudo groupadd -g 2222 engineering
  - sudo groupadd -g 3333 management
  - sudo groupadd -g 4444 hr
Challenge

Create directories.
1. There are four directories to be created:
  - accounting
  - engineering
  - management
  - hr
2. Create each group using the sudo mkdir /directoryname command:
  - sudo mkdir /accounting
  - sudo mkdir /engineering
  - sudo mkdir /management
  - sudo mkdir /hr
Challenge

Add each of the newly created directories to its associated group.
1. Use the command sudo chgrp groupname /directoryname to add each of the newly created directories to its associated group:
  - sudo chgrp accounting /accounting
  - sudo chgrp engineering /engineering
  - sudo chgrp management /management
  - sudo chgrp hr /hr
Challenge

Set group permissions on each of the newly created directories.
1. For each of the newly created directories, use the command sudo chmod g+rwx /directoryname to give the group owner read, write, and execute permissions to the directory:
  - sudo chmod g+rwx /accounting
  - sudo chmod g+rwx /engineering
  - sudo chmod g+rwx /management
  - sudo chmod g+rwx /hr
Challenge

Prevent non-group members from accessing files.
1. In order to prevent other non-group members from reading and executing files in each of the newly created directories, use sudo chmod o-rx /directoryname command:
  - sudo chmod o-rx /accounting
  - sudo chmod o-rx /engineering
  - sudo chmod o-rx /management
  - sudo chmod o-rx /hr

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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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.