Bash Shell Scripting - Variables in Functions (Local Variables)

This video tutorial explains the interaction between variables and functions in scripting. It demonstrates how to set variables, create functions, and understand variable scope. The tutorial highlights the use of the local keyword to maintain variable values outside functions, ensuring that changes within a function do not affect the global variable state. This is useful for managing variable names consistently without unintended overwrites.

What is the initial value assigned to the variable 'animal' in the script?

• Tiger

• Dog

• Elephant

• Cat

What happens to the variable 'animal' when it is modified inside the function?

• It changes to 'tiger' outside the function.

• It becomes undefined outside the function.

• It changes to 'cat' outside the function.

• It remains unchanged outside the function.

How does the 'local' keyword affect the variable 'animal' inside the function?

• It restricts the variable's scope to the function.

• It deletes the variable after the function.

• It prevents the variable from being used.

• It makes the variable global.

What is the purpose of using the 'local' keyword in a function?

• To delete variables after function execution.

• To ensure variables are only modified within the function.

• To rename variables automatically.

• To make variables accessible globally.

What is the final value of 'animal' after using the 'local' keyword in the function?

• Tiger

• Cat

• Dog

• Lion