[wrs]

Those aren’t “secret”, they’re obviously borrowed from rsh — oh that’s right, I’m old.

[aidenn0]

And these days you need to pass "-O" to scp to have it behave like rcp.

[jervant]

I'm pretty sure the ~ command style came from cu(1) which had it in at least 4.1BSD. I don't think rsh (which came in 4.2BSD) ever had such commands.

[wrs]

Whoops -- I meant rlogin. That had ~. and ~^Z. But you're right, rlogin got them from cu! (I'm not that old. :) )

[aa-jv]

Laughs in uucp!bangpath.