@node rcp@chapter rcp@cindex rcp@command{Rcp} copies files between machines.  Each file or directoryargument is either a remote file name of the form ``rname@@rhost:path'',or a local file name (containing no `:' characters, or a `/' before any `:'s).@section InvokingThe options are as follows :@table @samp@item -K@itemx --kerberos@opindex -K@opindex --kerberosTurns off all Kerberos authentication.@item -k@itemx --realm=REALM@opindex -k@opindex --realmThe option requests rcp to obtain tickets for the remote host in REALMrealm instead of the remote host's realm as determined by krb_realmofhost(3).@item -p@itemx --preserve@opindex -p@opindex --preserveCauses rcp to attempt to preserve (duplicate) in its copies the modificationtimes and modes of the source files, ignoring the umask. By default, themode and owner of file2 are preserved if it already existed; otherwise themode of the source file modified by the umask(2) on the destination host isused.@item -r@itemx --recursive@opindex -r@opindex --recursiveIf any of the source files are directories, rcp copies each subtreerooted at that name; in this case the destination must be a directory.@item -x@itemx --encrypt@opindex -x@opindex --encryptTurns on DES encryption for all data passed via the rcp session.  This mayimpact response time and CPU utilization, but provides increased security.@end table@command{rcp} doesn't detect all cases where the target of a copy might bea file in cases where only a directory should be legal.Is confused by any output generated by commands in a .login, .profile, or.cshrc file on the remote host.The destination user and hostname may have to be specified as``rhost.rname'' when the destination machine is running the 4.2BSD versionof @command{rcp}.