rsh (remote shell):
Utility for executing a command on a remote machine.
rsh [-l username] remote_machine [command]For security reasons, ssh is the preferable service for logging in remotely.
ssh (secure shell):
rcp (remote copy), scp (secure copy):
These two commands copy files from one machine
to another using a similar notation to cp.
scp is the secure version from the ssh package.
rcp [-r] [uesr@host1:]file1 [user@host2:]file2 scp [-r] [[user@]host1:]file1 [...] [[user@]host2:]file2 Options: Copy recursively: -r