Lesson 2: Linux Basics for DevOps

Linux commands, permissions, packages, processes, and networking for DevOps

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File Operations

ls: List directory contents
cd: Change directory
cp: Copy files or directories
mv: Move or rename files
rm: Remove files or directories

Permissions & Ownership

chmod: Change file permissions
chown: Change file owner and group
sudo: Execute commands as root or another user

Package Management

apt: Debian/Ubuntu package manager
yum: CentOS/RHEL package manager
dnf: Fedora/RHEL 8+ package manager

Process Monitoring

ps: Display running processes
top / htop: Real-time process monitoring

Networking

netstat: View network connections
ping: Check connectivity
curl: Test HTTP requests and endpoints

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