When used from within a script, which variable contains the script's name?

For example you in home directory and in this directory is some files including '.html' files.

How could you get a list of all '.html' files in current directory?

In the script shown below

'greeting' is:

Suppose

your current working directory is your home directory. 

How could you

run the script 'demo.sh' that  is located in your home directory?  

Find

three correct answers.

What is the output of:

The ******** keyword pauses in the script using to get input from standard input.

You are in the root directory. How to find the 'text.t' file in the file system?

You are in some folder, How to exit from this folder?

You are in folder '/home/user'. How to navigate into the root directory?

You are in folder '/home/user'. How to create in this folder subfolders 'data/info'?