Red Hat Linux Cheat Sheet 2023: Your Ultimate One-Page Guide to Mastering Linux Commands

Here is a Red Hat Linux cheat sheet with some useful commands and tips:

System Information Commands:

• uname -a: Display system information
• hostname: Display the hostname of the system
• top: Display real-time system information including processes and memory usage
• free -h: Display memory usage in a human-readable format
• df -h: Display disk usage in a human-readable format
• lsb_release -a: Display Linux distribution information

File and Directory Commands:

• ls: List files and directories
• cd: Change directory
• mkdir: Create a directory
• rm: Remove a file or directory
• cp: Copy a file or directory
• mv: Move or rename a file or directory
• chmod: Change file or directory permissions
• chown: Change file or directory ownership
• grep: Search for a pattern in a file

Network Commands:

• ping: Test network connectivity
• ifconfig: Display network interface configuration
• netstat: Display network connections and statistics
• traceroute: Trace the path to a network host
• ssh: Connect to a remote system over SSH
• scp: Securely copy files to and from a remote system over SSH

Package Management Commands:

• yum: Install, update, and remove packages
• rpm: Query and manage installed packages
• dnf: Modern package manager for newer versions of Red Hat Linux

System Administration Commands:

• systemctl: Control system services
• journalctl: View system logs
• firewall-cmd: Configure the firewall
• useradd: Create a new user
• passwd: Change a user’s password
• su: Switch to another user
• sudo: Run a command as another user with elevated privileges