01. ls – The most frequently used command in Linux to list directories
02. pwd – Print working directory command in Linux
03. cd – Linux command to navigate through directories
04. mkdir – Command used to create directories in Linux
05. mv – Move or rename files in Linux
06. cp – Similar usage as mv but for copying files in Linux
07. rm – Delete files or directories
07. touch – Create blank/empty files
07. ln – Create symbolic links (shortcuts) to other files
08. cat – Display file contents on the terminal
09. clear – Clear the terminal display
10. echo – Print any text that follows the command
11. less – Linux command to display paged outputs in the terminal
12. man – Access manual pages for all Linux commands
13. uname – Linux command to get basic information about the OS
14. whoami – Get the active username
15. tar – Command to extract and compress files in Linux
16. grep – Search for a string within an output
17. head – Return the specified number of lines from the top
18. tail – Return the specified number of lines from the bottom
19. diff – Find the difference between two files
20. cmp – Allows you to check if two files are identical
21. comm – Combines the functionality of diff and cmp
22. sort – Linux command to sort the content of a file while outputting
23. export – Export environment variables in Linux
24. zip – Zip files in Linux
25. unzip – Unzip files in Linux
25. ssh – Secure Shell command in Linux
26. service – Linux command to start and stop services
27. ps – Display active processes
28. kill and killall – Kill active processes by process ID or name
29. df – Display disk filesystem information
30. mount – Mount file systems in Linux
31. chmod – Command to change file permissions
32. chown – Command for granting ownership of files or folders
33. ifconfig – Display network interfaces and IP addresses
34. traceroute – Trace all the network hops to reach the destination
35. wget – Direct download files from the internet
36. ufw – Firewall command
37. iptables – Base firewall for all other firewall utilities to interface with
38. apt, pacman, yum, rpm – Package managers depending on the distro
39. sudo – Command to escalate privileges in Linux
40. cal – View a command-line calendar
41. alias – Create custom shortcuts for your regularly used commands
42. dd – Majorly used for creating bootable USB sticks
43. whereis – Locate the binary, source, and manual pages for a command
44. whatis – Find what a command is used for
45. top – View active processes live with their system usage
46. useradd and usermod – Add new user or change existing users data
47. passwd – Create or update passwords for existing users
