cheatsheet

Linux

File and Directory

• cd: Change directory
• cd ~: Go to home directory
• cd ..: Go to parent directory
• pwd: Print working directory
• ls: List files and directories
• ls -l: List files and directories with detailed information
• mkdir: Create a new directory
• rm: Remove a file or directory
• rm -r: Remove a directory and its contents
• cp: Copy a file
• cp -r: Copy a directory and its contents
• mv: Move or rename a file
• mv -r: Move or rename a directory and its contents

File Editing

• touch: Create a new empty file
• cat: Display the contents of a file
• less: Display the contents of a file with pagination
• head: Display the first few lines of a file
• tail: Display the last few lines of a file
• nano: Edit a file with the nano editor
• vim: Edit a file with the vim editor

System Information

• uname -a: Display system information
• hostname: Display the system hostname
• uptime: Display system uptime
• whoami: Display the current user
• who: Display currently logged-in users

Process Management

• ps: Display running processes
• ps -ef: Display all running processes with detailed information
• kill: Kill a process
• killall: Kill all processes with a specific name
• bg: Run a process in the background
• fg: Bring a background process to the foreground

Network

• ping: Test network connectivity
• ssh: Connect to a remote system via SSH
• scp: Copy files over SSH
• wget: Download a file from the internet
• curl: Transfer data to or from a web server

Package Mangement

• apt-get: Package manager for Debian-based systems
• yum: Package manager for RPM-based systems
• pip: Manage Python packages

Security

• sudo: Run a command with superuser privileges
• chmod: Change file permissions
• chown: Change file ownership
• ssh-keygen: Generate SSH keys

System Administration

• useradd: Add a new user
• userdel: Delete a user
• groupadd: Add a new group
• groupdel: Delete a group
• passwd: Change user passwords

File System

• df: Display disk usage
• du: Display directory usage
• fsck: Check and repair filesystems
• mount: Mount filesystems
• umount: Unmount filesystems

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