Create, View, and Edit Text Files

Question 1

What are three standard communication channels for running programs, or processes?

Answer 1

standard input, standard output, and standard error.

Question 2

What is I/O redirection used for?

Answer 2

To read standard input of another process and can format output or build complex commands.

Question 3

What are pipelines used for?

Answer 3

To connect standard output from one process to the standard input of another process and can format output or build complex commands.

Question 4

What is the recommended command-line text editor option?

Answer 4

Vim is the recommended option because it is commonly installed by default in Linux distributions.

Question 5

What do shell variables do?

Answer 5

Help to run commands and are unique to a shell session.

Question 6

What are environment variables used for?

Answer 6

To modify the behavior of the shell or the processes.