Module 1 - Linux

Lab 1: Understanding & Exploring the OS

• What is the OS name, version, and kernel release?

• What are all the running processes, and which 5 use the most memory?

• What is the system uptime, and which users are logged in?

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Lab 2: Virtual Machines & Networking

• How do you create a new Ubuntu VM using VirtualBox or VMware?

• How do you assign a static IP and verify connectivity with another VM?

• How do you configure a hostname and update the /etc/hosts file?

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Lab 3: Package Management

• How do you install nginx, verify it's running, and check its version?

• How do you safely remove a package and clean up dependencies?

• How do you use package managers like apt, snap, or yum?

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Lab 4: Users, Groups & Permissions

• How do you create a new group named devops and a user named jenkins?

• How do you add the user to the group and set a password?

• How do you create a shared directory and assign group ownership?

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Lab 5: Linux File System & Ownership

• How do you find the mount points and available disk space?

• How do you identify file types in Linux?

• How do you change a file’s ownership to another user?

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Lab 6: Security and System Administration

• How do you check running services and open ports?

• How do you stop an unused service and disable it from auto-starting?

• How do you configure a firewall to allow only SSH and HTTP?

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Lab 7: Working with Vim & Filters

• How do you open a file in Vim, edit it, and save changes?

• How do you extract all error lines from /var/log/syslog?

• How do you sort and count unique entries from a text file?

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Lab 8: Cron Jobs & Automation

• How do you create a cron job that backs up /etc daily?

• How do you verify scheduled cron jobs for a user?

• How do you redirect cron job output to a log file?

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Lab 9: Archiving & Compression

• How do you compress /var/log using tar and gzip?

• How do you extract an archive to /tmp/log_backup?

• How do you verify file integrity after extraction?

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Lab 10: SSH, SCP & Remote Access

• How do you generate an SSH key pair?

• How do you copy a public key to another VM for password less SSH?

• How do you securely transfer a file using SCP?

• (Bonus) How do you automate remote command execution with SSH?