Quiz 4
1. Which flag tests if a file is readable?
2. Which flag tests if a file is writable?
3. Which flag tests if a file is executable?
4. Which command displays free memory?
5. What tool is used for network stats?
6. Where is stdout discarded?
7. Which command sorts file content?
8. Which utility counts words?
9. How is a block executed in the background?
10. What command extracts the file basename?
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