Environment Variables in Linux

Question 1

What is a environment variables?

Answer 1

It is a variable that is accesible during the entire session in the shell.

Question 2

What is the command to see the list of the environment variables?

Answer 2

env

Question 3

How is displayed the SSH_CONNECTION environment variable?

Answer 3

SSH_CONNECTION=source Port Destination Port

Question 4

What is the command to create a new variable?

Answer 4

export new_variable_name=VALUE