Linux Fundamentals - Environment Variables

The video tutorial explains environment variables, their usage in shell scripts, and how they differ across SSH sessions. It demonstrates accessing and setting environment variables using commands like 'echo' and 'export'. The tutorial also covers setting runtime variables for applications like Node.js, Python, and Java. A challenge is presented to create a new variable and script.

What is the primary purpose of environment variables in a shell session?

• To store temporary files

• To execute shell scripts automatically

• To manage user permissions

• To provide configuration settings accessible throughout the session

How can you list all environment variables in a shell session?

• By executing 'show_vars'

• By typing 'E&V'

• By using the command 'list_env'

• By entering 'env_list'

What changes in environment variables can occur when logging in as different users via SSH?

• The variables remain the same for all users

• The variables are reset to default values

• The variables are deleted upon login

• The variables can differ based on the user and session conditions

Which command is used to display the value of an environment variable in the terminal?

• display

• print

• show

• echo

What is the purpose of the 'export' command in relation to environment variables?

• To list all environment variables

• To create or modify an environment variable

• To reset environment variables to default

• To delete an environment variable

In the practical challenge, what is the name of the new environment variable you need to create?

• name_var

• my_variable

• user_name

• my_name

What is the purpose of the shell script 'name.sh' in the practical challenge?

• To delete a specific environment variable

• To print a user's name to the terminal

• To list all environment variables

• To reset the terminal settings