Please use Linux system to sove the following question:

A) Write a single command that will return every username in the system in alphabetical order. [You may chain commands using piping and redirects]

B) Write a shell script that only prints the odd numbered lines of each file in the current directory, except for the script itself. The output should be filename: line for each odd numbered line. You do not need to print line numbers.

B*)Bonus: write the script in a way that it works no matter the filename given to the script.