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Please Include chapter and page numbers references with each answer. Without thi

ID: 3532338 • Letter: P

Question

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1. What does the shell ordinarily do while a command is executing? What should you do if you do not want to wait for a command to finish before running another command?

3. What is a PID number? Why are these numbers useful when you run processes in the background? Which utility displays the PID numbers of the commands you are running?

A Process Identification (PID) Number

Explanation / Answer

1)The shell works very fast. You might think you're waiting on it but it's finished... You can give it multiple commands, and they will execute in the order you type in. While it is working it will spit out some results and when done it will return you to $ prompt


5)a) type "chmod +x journal"
b)It reads the name from stdin and cats it to journal-file rather than stdout


7)b


5)d