Linux quiz

More questions about Linux

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   How did the Linux penguin mascot Tux get its name?

   Answer: Short for Torvalds' Tuxedo

   Why: James Hughes coined Tux in June 1996, spelling it (T)orvalds (U)ni(X); the tuxedo reading came from the penguin's markings.

2. 2 Medium

   How do you identify a hidden file or directory in a Linux system?

   Answer: It starts with a dot

   Why: Rob Pike says it was an accident: an early listing tool hid every name beginning that way instead of just the current and parent entries.

3. 3 Hard

   What is the numerical value for the Sticky Bit in permissions?

   Answer: 1000

   Why: It is the extra digit in front of the usual ones, and its everyday job is letting anyone write into a shared folder while only owners delete.

4. 4 Easy

   What character represents the root directory in a file path?

   Answer: /

   Why: Everything hangs beneath this one point, including separate disks, so there is no drive letter anywhere in the system.

5. 5 Medium

   Which command changes the ownership of a file or directory?

   Answer: chown

   Why: Only the superuser can hand a file to somebody else, because otherwise you could dodge a disk quota by dumping files on a colleague.

6. 6 Hard

   Which system call creates a new process by duplicating itself?

   Answer: fork

   Why: It returns twice: zero in the child and the child's PID in the parent. Linux copies only page tables, thanks to copy-on-write.