5. What does the following Linux shell pipeline do? grep nd xyz | wc -I 6. Write a Linux pipeline that prints the eighth line of file z on standard output. 7. Why does Linux distinguish between...

Extracted text: 5. What does the following Linux shell pipeline do? grep nd xyz | wc -I 6. Write a Linux pipeline that prints the eighth line of file z on standard output. 7. Why does Linux distinguish between standard output and standard error, when both default to the terminal? 8. A user at a terminal types the following commands: a|b|c & d|e|f& After the shell has processed them, how many new processes are running?