The Complete Practical Docker Guide - Environment Variables

The video tutorial explains environment variables, their usage in shell scripts, and how they differ across user sessions. It covers accessing and setting these variables using commands like 'ECHO' and 'export'. The tutorial concludes with a challenge to create a new variable and a shell script to print a name.

What command can you use to list all environment variables in a shell session?

• ENV

• SHOW_VARS

• PRINT_ENV

• LIST_ENV

Which environment variable is used to define the current working directory?

• HOME

• DIR

• PWD

• CWD

What is the significance of different SSH connection variables in user sessions?

• They determine the user's access level.

• They indicate different SSH sessions.

• They specify the user's home directory.

• They show the user's login time.

How can you access the value of an environment variable in the terminal?

• Using the DISPLAY command

• Using the SHOW command

• Using the ECHO command

• Using the PRINT command

What command is used to set a new environment variable?

• ASSIGN

• EXPORT

• DEFINE

• SET

Which command would you use to see the value of the PATH variable?

• ECHO$ PATH

• PRINT$ PATH

• DISPLAY$ PATH

• SHOW$ PATH

What is the purpose of setting environment variables before starting an application?

• To increase application speed

• To enhance application security

• To configure the application runtime environment

• To reduce memory usage