Bash Shell Scripting - Simple Function

The video provides a recap on functions and variables in bash scripting. It covers the syntax for creating functions, the importance of declaring functions before use, and how to handle errors. The video also explains variable scope, demonstrating the difference between global and local variables within functions. The tutorial concludes with a brief summary and a preview of future topics.

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

• function_name { commands }

• function 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 script will automatically declare the function.

• The script will run without errors.

• The function will be ignored.

• A 'command not found' error will occur.

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

• variable = value

• variable: value

• variable=value

• variable = 'value'

What is the output of the variable 'animal' after calling the function 'set_animal' if it is set to 'tiger' inside the function?

• dog

• tiger

• cat

• lion

What keyword is used to limit a variable's scope to a function in Bash?

• global

• static

• local

• private

What is the default scope of a variable in Bash?

• Global within the script

• Local to the script

• Global to the system

• Local to the function

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

• cat

• elephant

• dog

• tiger