Bash Shell Scripting- Scope of the Variables (Global and Local Variables), Returning a variable value

The video tutorial covers the concepts of variable scope in shell scripts, focusing on global and local variables. It explains how to define and call functions, and the differences between global and local variables. The tutorial also demonstrates how to modify variable scope using the local keyword and how to return values from functions using ECHO and return commands.

What is the default scope of a variable in a shell script?

• Protected

• Global

• Local

• Private

Which line is necessary to start a shell script?

• Shebang line

• Function definition

• Echo command

• Variable declaration

How can you execute a function in a shell script?

• By using a shebang line

• By declaring it as global

• By calling its name

• By defining it

What happens to a global variable when modified inside a function?

• It is deleted

• It gets updated globally

• It becomes local

• It remains unchanged

What keyword is used to define a local variable in a function?

• Private

• Local

• Static

• Global

Where can a local variable be accessed?

• Only inside the function

• In other functions

• Anywhere in the script

• In the main script

Which command is recommended for returning a variable value from a function?

• Return

• Exit

• Echo

• Print

What is the limitation of the return command in shell scripting?

• It can only return strings

• It can only return integers

• It can return any data type

• It cannot return values

How can you capture the output of a function in a variable?

• Using the print command

• Using the echo command

• Using the exit command

• Using the return command

What is the exit status of a function when using the return command?

• The function's output

• The function's input

• The function's name

• The function's exit code