40 Essential Linux Commands That Every DEVELOPER Should Know

1. ls - used to list the files and directories in a directory2. cd - used to change the current directory3. pwd - used to display the current working directory4. mkdir - used to create a new directory5. rmdir - used to remove an empty directory6. rm - used to remove a file or directory7. touch - used to create a new file8. cp - used to copy a file or directory9. mv - used to move or rename a file or directory10. nano or vim - used to edit text files in the command line11. cat - used to display the contents of a file12. less - used to view the contents of a file one page at a time13. grep - used to search for a specific string of text in a file or multiple files14. find - used to search for files in a directory15. chmod - used to change the permissions of a file or directory16. chown - used to change the owner of a file or directory17. su - used to switch to the superuser or root account18. sudo - used to execute a command as the superuser or root account19. exit - used to log out of the current user account20. clear - used to clear the terminal screen21. history - used to display a list of recently executed commands22. top - used to display the currently running processes and their resource usage23. ps - used to display the currently running processes24. kill - used to terminate a running process25. df - used to display the available and used disk space on a file system26. du - used to display the size of a directory or file27. free - used to display the amount of free and used memory in the system28. ln - used to create a symbolic link between a file or directory29. tar - used to create and extract archive files30. gzip and gunzip - used to compress and decompress files31. ssh - used to securely connect to a remote system32. scp - used to securely copy files between systems33. rsync - used to efficiently copy files and directories between systems34. ping - used to test network connectivity35. traceroute - used to display the route a packet takes to reach a host36. netstat - used to display information about network connections and routing tables37. ifconfig - used to configure network interfaces38. apt-get - used to manage packages on Debian-based systems39. yum - used to manage packages on Red Hat-based systems40. systemctl - used to manage and view system services