[$] Deprecating scp

The scpcommand, which uses the SSH protocol tocopy files between machines, is deeply wired into the fingers of many Linux users anddevelopers - doubly so for those of us who still think of it as a moresecure replacement for rcp. Many users may be surprised to learn,though, that the resemblance to rcp goes beyond the name; much ofthe underlying protocol is the same as well. That protocol is showing itsage, and the OpenSSH community hasconsidered it deprecated for a while. Replacing scp in a way that keeps users happy may not be an easytask, though.