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Linux Fundamentals Quiz

Test your knowledge of essential Linux commands, file systems, permissions, and process management.

By Ehsan Golpayegani ·

Linux Fundamentals Quiz

Test your understanding of core Linux concepts. Answers are revealed at the bottom.

Question 1: File Permissions

What does the permission string rwxr-x--- mean?

  • A) Owner: read/write/execute, Group: read/execute, Others: no access
  • B) Owner: read/write/execute, Group: read/write, Others: execute
  • C) Owner: all, Group: all, Others: none
  • D) Owner: read/execute, Group: read/write/execute, Others: none

Question 2: Process Management

Which command shows a real-time, interactive view of running processes?

  • A) ps aux
  • B) top
  • C) jobs
  • D) ls /proc

Question 3: File System Hierarchy

Which directory typically contains system-wide configuration files?

  • A) /var
  • B) /opt
  • C) /etc
  • D) /usr

Question 4: Networking

What does the command ss -tulnp display?

  • A) Active TCP and UDP connections with process info
  • B) DNS resolution results
  • C) Firewall rules
  • D) Network interface configurations

Question 5: Package Management

On a Debian/Ubuntu system, which command installs a package and its dependencies?

  • A) yum install <package>
  • B) apt install <package>
  • C) pacman -S <package>
  • D) rpm -i <package>

Answers

  1. A — rwx (owner: 7), r-x (group: 5), --- (others: 0) = 750
  2. B — top provides a real-time, interactive process viewer
  3. C — /etc is the standard location for system configuration files
  4. A — ss -tulnp shows TCP/UDP listening sockets with process names
  5. B — apt install is the Debian/Ubuntu package manager command
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