How to move programs?

Hey guys
Quick question (And yes i searched this one out and tried to figure it out for myself)
How can I move a program from one computer to another?

Like on computer A controls lights. I copied it to a blank Floppy and when i did mv Lights / from the disk
it said File Not Found
What do I do?
(Please be specific Im VERY new to this :/)

Go to computer A.
Place a disk drive (if there isn't one yet) and insert a floppy on it.
On the computer, type: copy <ProgramName> disk/<ProgramName>
Remove the floppy.
Go to computer B.
Place a disk drive (if there isn't one yet) and insert the floppy on it.
On the computer, type: copy disk/<ProgramName> <ProgramName>

Now the program should be on computer B, so you can run it by typing it's name.
Hope that's clear enough :(/>/>

this doesn't work for me when i copy from turtle to PC it works But From Turtle To Turtle Says No Such Program

Never Mind I Got It