37 Important Linux Commands You Should Know

As a Linux user, knowing some essential commands is crucial for efficient system administration and navigation. Here’s a list of 37 important Linux commands that you should know:

1. ls: List files and directories in the current directory.

2. cd: Change directory.

3. pwd: Print the working directory (current path).

4. touch: Create an empty file.

5. mkdir: Create a new directory.

6. rmdir: Remove an empty directory.

7. rm: Remove files or directories (use with caution).

8. cp: Copy files or directories.

9. mv: Move or rename files or directories.

10. cat: Concatenate and display file content.

11. nano/vi: Text editors for creating or modifying files.

12. grep: Search for patterns in files.

13. find: Search for files and directories.

14. chmod: Change file permissions.

15. chown: Change file ownership.

16. ps: Display a list of running processes.

17. top/htop: Monitor system processes and resource usage.

18. kill: Terminate processes (using process IDs).

19. df: Display disk space usage.

20. du: Display file and directory space usage.

21. free: Display memory usage.

22. uname: Display system information.

23. ifconfig/ip: Configure network interfaces (use “ip” for modern systems).

24. ping: Check network connectivity to a host.

25. ssh: Securely connect to remote systems.

26. scp: Securely copy files between local and remote systems.

27. tar: Archive files and directories.

28. gzip/gunzip: Compress or decompress files.

29. date: Display or set the system date and time.

30. history: View the command history.

31. man: Display the manual page for a command.

32. who: Display who is logged on.

33. whoami: Display the current user.

34. su/sudo: Switch to a different user or execute commands with superuser privileges.

35. ssh-keygen: Generate SSH keys for secure authentication.

36. apt/yum/dnf: Package managers for installing, updating, and removing software packages (apt for Debian/Ubuntu, yum/dnf for CentOS/Fedora).

37. reboot/shutdown: Reboot or shut down the system.

Learning and using these Linux commands will help you navigate and manage your system more effectively. Keep in mind that some commands may require administrative privileges (use “sudo” for that). Additionally, always double-check the commands before executing them, especially when dealing with system-critical operations, as incorrect usage may lead to data loss or system instability.

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