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

   Which command deletes files in Linux?

   Answer: rm

   Why: Adding the -r flag allows rm to delete entire folders and their contents recursively.

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 does the cd command perform in the terminal?

   Answer: Change directory

   Why: It is built into the shell rather than being a program on disk, because a separate program could never move where its parent is standing.

5. 5 Medium

   What acronym identifies a running program in Linux?

   Answer: PID

   Why: The initial process started when the Linux kernel finishes booting is always given a PID of 1.

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.