Identify the distribution
Read the distribution details in this browser practice filesystem.
cat /etc/os-releasePractice enterprise Linux navigation, RPM package discovery, and administration workflows in an online CentOS environment.
Start here
Load a task into the terminal, then press Enter to see the result. Each example works in the introductory session on this page.
Read the distribution details in this browser practice filesystem.
cat /etc/os-releaseCheck your user ID and group membership.
idFind the operating system configuration files.
ls /etcSearch the sample package index for the curl HTTP client.
dnf search curlPractice the installation syntax; this browser session updates a simulated package database.
sudo dnf install -y curlCheck the sample curl version after installation. Curl is also preinstalled for this example.
curl --versionPrepare a directory for your files.
mkdir -p practiceSee the local hostname mappings used in this practice environment.
cat /etc/hostsNo setup needed
Practice enterprise Linux navigation, RPM package discovery, and administration workflows in an online CentOS environment.
Start with the short command exercises above. When you are ready for a project, open the linked LabEx lab to work with real tools in an online Linux environment, with step-by-step guidance and immediate feedback.
Keep learning
Build on your CentOS experiments with a structured skill tree. Explore the skills, choose a guided lab, and practice each concept in an online environment.
CentOS-style workflows introduce RPM-based package management, services, permissions, and enterprise Linux administration. These concepts are useful across related distributions, while commands and package availability vary by release.
Try introductory commands in your browser without installing Linux locally. The guest terminal simulates a limited set of CentOS-style examples, making it convenient to explore navigation and file operations before moving to a hosted lab.
The terminal on this page is a browser simulation. Its current full-environment button opens an introductory Ubuntu lab, not CentOS 8. Ubuntu uses different package-management tools; choose a lab with the required distribution for CentOS-specific administration.
Use it to reinforce command-line habits and explore administration concepts. For package management, services, networking, or project work, continue in a hosted lab and confirm its distribution and installed tools match your task.
Yes. Start with the supported quick-start examples for directories, files, and system information. Follow guided Linux labs for structured practice, and remember that distribution-specific commands can differ in the linked Ubuntu environment.
Practice navigation and file operations, compare the results with each example, and progress through the Linux Skill Tree. When studying RPM or CentOS-specific settings, select an appropriate distribution lab and check its version before following a tutorial.
Your next step
Continue with real tools, guided labs, and Labby assistance.