7.01. Linux Commands

  1. TAR command. [Analogics Jan-2026]
  2. Tell me 20 commands in LSP / Linux. [5G Testbed]
  3. Explain plenty of commands in Linux that you know. [5G Testbed]
  4. What are the networking commands you know in Linux? [5G Testbed]
  5. What is the ls command used for? [Mirafra Technologies]
  6. How does the ls command work? [Mirafra Technologies]
  7. What will you see using the command ls -eaf? [INFOBELL]
  8. How can you check hidden files in Linux? (ls -a) [Mirafra Technologies]
  9. What is the grep command used for? [Mirafra Technologies]
  10. Which command is used to remove lines containing a specific word? (grep -v / sed) [Mirafra Technologies]
  11. What is the use of the tail command? [Mirafra Technologies]
  12. How does the tail command work? [Mirafra Technologies]
  13. What is the mv command used for? [Mirafra Technologies]
  14. Which command is used to create a directory? (mkdir) [Mirafra Technologies]
  15. Which command is used to remove a directory with subdirectories? (rm -rf)
  16. What is the echo command used for? [Mirafra Technologies]
  17. Is the cat command used to list files with the name ‘cat’? (No — cat is used to read file content) [Mirafra Technologies]
  18. Which command is used to change the permissions of a file? (chmod)
  19. Which command is used to create links in Linux? (ln) [Mirafra Technologies]
  20. Which command is used to get the process ID? (ps / pidof / pgrep) [Mirafra Technologies]
  21. How can you check which users are currently logged in? (who / w) [Mirafra Technologies]
  22. Which command to find remaining RAM space? (free -h) [Johnson Control]
  23. Which command shows your current directory? (pwd)
  24. How can you run a command as the root user? (sudo) [Mirafra Technologies]
  25. If you do not know a command, how will you find its purpose and syntax? (man <command>)
  26. Which symbol is used for output redirection? (>)
  27. Which symbol is used for comments in shell scripting? (#)
  28. How will you check if a process is running or not? (ps aux | grep <name>) [INFOBELL]
  29. How do you use the apt command?
  30. What does the ssh command do?
  31. What is the nice command?
  32. Which command checks open ports in Linux? (netstat -tuln / ss)
  33. Which command is used to check Wi-Fi and Ethernet connections in Linux? (nmcli / ip link)
  34. What does the ping command do? What parameters does it give? [5G Testbed]
  35. Tell me the extensions/options of the ping command. [5G Testbed]
  36. Your LAN cable or Wi-Fi is not working — how will you check network status? [5G Testbed]
  37. What does the chroot command do?
  38. What is the purpose of SELinux?
  39. Which file defines sudo privileges for users? (/etc/sudoers)
  40. Which log file contains authentication events? (/var/log/auth.log)
  41. What happens if a soft link is deleted?
  42. If Linux is installed on your computer, in which location are hard disk files stored?
  43. What is the top-most directory in Linux? (/)
  44. If a file has 777 permissions, what type of access is allowed? [Mirafra Technologies]
  45. Can a file exist without any permissions? [Mirafra Technologies]
  46. What is file system? What is its use? How do you create a file system?
  47. Are signals in Linux used only to communicate between threads? [Mirafra Technologies]
  48. Are message queues used to send data between two different processes? [Mirafra Technologies]
  49. What is Git?
  50. What is Ubuntu? [Rayden]
  51. Difference between Linux and Unix. [Webber]
  52. What type of files do we have in Linux? [Team F1 Network]
  53. Common file descriptors in Linux (stdin, stdout, stderr). [Team F1 Network]
  54. Command to see running processes. [Team F1 Network]
  55. Command to see the threads. [Team F1 Network]
  56. What is the difference between ls and ll commands? [Team F1 Network]
  57. What is the free command? [Team F1 Network]
  58. What is the file format in Linux? [Team F1 Network]
  59. What is a pipe in Linux? [Webber]
  60. What is the ICMP? What is the ping command? [Team F1 Network]
  61. Write any 5 shell commands. [Tenacity]
  62. What is GIT? Write some commands: git add, git commit, git push, git pull, git clone. [Rayden / VEM Technology / Webber]
  63. What are Git branches? What is the use of Git branch? [Webber / VEM Technology]
  64. What is the difference between GUI and command line? [Webber]
  65. What Linux commands do you know? [TeraScale]
  66. Explain insmod and rmmod commands. [TeraScale]
  67. Explain the mknod command (create device file). [TeraScale]
  68. What is GDB? How to use it for debugging? [TeraScale]