Linux commands basic and advanced

Linux commands include ls, pwd, mkdir, cp, mv, rmdir, rm

Absolute path, relative path, user and group mangement

SSH based authentication

Basic Commands:

• Navigation:
  • cd: Change directory
  • pwd: Print Working Directory (show your location)
  • ls: List directory contents
• File Manipulation:
  • mkdir: Create directory
  • touch: Create empty file
  • cp: Copy files
  • mv: Move or rename files
  • rm: Delete files (use with caution!)
• Viewing Files:
  • cat: Display file contents
  • less / more: View large files page-by-page
• Getting Information:
  • man: Get help on a specific command
  • uname: Show system information
  • whoami: Show your logged-in username

Advanced Commands:

• Permissions:
  • chmod: Change file permissions
  • chown: Change file ownership
• Text Processing:
  • grep: Search for text in files
  • sort: Sort file contents
  • cut: Extract specific parts of lines
• Networking:
  • ping: Check network connectivity
  • ssh: Securely connect to remote servers
• Process Management:
  • ps: Show running processes
  • kill: Terminate processes

Shell Scripting:

Shell scripting allows you to automate tasks by combining commands into scripts. Here are some key aspects:

• Control Flow:
  • if statements: Make decisions based on conditions
  • for loops: Repeat commands a certain number of times
  • while loops: Repeat commands as long as a condition is true
• Variables:
  • Store and manipulate data within the script
• Functions:
  • Create reusable blocks of code

Learning these concepts will empower you to navigate the Linux file system, manage files effectively, automate tasks, and become a more powerful Linux user.