System Management Commands

    sudo — Execute as Administrator

Run commands with elevated privileges when you need system-level access.

sudo yum update             # Update system packages
sudo systemctl restart nginx # Restart a service
sudo passwd username        # Change user password

systemctl — Service Management

Control system services and daemons efficiently.

systemctl start apache2     # Start service
systemctl stop apache2      # Stop service
systemctl restart apache2   # Restart service
systemctl status apache2    # Check service status
systemctl enable apache2    # Enable on boot

yum — Package Manager (Amazon Linux 2)

Install, update, and manage software packages on your system.

yum update                  # Update all packages
yum install nginx           # Install package
yum remove package-name     # Remove package
yum search keyword          # Search for package

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