What is environment variable scope?

Can you explain what environment variable scope means?

Sure! Environment variable scope refers to the visibility and lifetime of environment variables in a program or system.

How do local and global scopes differ in this context?

Local scope means the variable is accessible only within a specific function or block, while global scope allows access throughout the entire program.

Can you give me an example of how to set an environment variable in a script?

Absolutely! In a bash script, you can set a variable like this: export MY_VAR='value'. This makes it available to any subprocess.

What happens if I try to access a local variable outside its scope?

If you try to access a local variable outside its scope, you'll get an error indicating that the variable is undefined.