Bash Shell Scripting - Simple Function

This video provides a recap on functions and variables in bash scripting. It begins with an introduction to creating and using functions, highlighting the importance of declaring functions before use. The video then transitions to discussing variables, explaining how they are global by default and how to localize them within functions using the 'local' keyword. The tutorial concludes with a brief recap and a preview of upcoming topics.

What is the correct syntax to define a function in Bash?

• function function_name { commands }

• function_name: commands

• def function_name: commands

• function_name() { commands; }

What happens if you try to use a function before it is declared in Bash?

• The function will be ignored.

• The function will execute with default values.

• The script will run without any issues.

• An error 'command not found' will occur.

How do you assign a value to a variable in Bash?

• variable = 'value'

• variable: value

• variable=value

• variable = value

What will be the value of 'animal' after calling the function 'set_animal' if it is set to 'tiger' inside the function?

• dog

• tiger

• cat

• lion

What is the default scope of a variable in Bash?

• Local within the script

• Global within the script

• Global within the system

• Local within the function

How can you restrict a variable's scope to a function in Bash?

• Declare it outside the function

• Use the 'restrict' keyword

• Use the 'local' keyword

• Use the 'global' keyword

What will be the value of 'animal' outside the function if it is declared as local inside the function?

• elephant

• dog

• lion

• tiger