Program One -- Your .bash_profile or .bashrc Program

Points
Task
1
It Prints "Welcome, Count Vlad!" or something like that when you log in
2
All of these are aliases for "ls -la":  ls-la, LS-LA, dir
3
Your prompt contains your hostname, your username, some clue as to which dir you are in, and the current time.
1
When you log in, it tells you who else is logged in
3
It also tells you which professors are logged in
3
And it only lists each prof once
3
And it only lists each prof once
3
It tells you the total number of people logged in
2
It tells the total free space available on the fileystem containing your home directory