03-30-2008
Hi
R-commands use some kind of trusted relationship by editing the .rhosts or the /etc/hosts.equiv file.
Run commands sequentially across a cluster from a UNIX server, Part 2: Remote shell (rsh)
So if you don't configure each file, let's say the .rhosts file, on each machine you won't be able to do what you want.
My recommendation is to drop the use of r-commands and use OpenSSH instead. R-commands send info across the network in plain text and their use is known as security pitfall. You can configure OpenSSH in such a way no password prompt is used by exchanging encrypted keys between hosts.
Hope this helps
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LEARN ABOUT FREEBSD
hosts.equiv
HOSTS.EQUIV(5) BSD File Formats Manual HOSTS.EQUIV(5)
NAME
hosts.equiv, .rhosts -- trusted remote host and user name data base
DESCRIPTION
The hosts.equiv and .rhosts files contain information regarding trusted hosts and users on the network. For each host a single line should
be present with the following information:
simple
hostname [username]
or the more verbose
[+-][hostname|@netgroup] [[+-][username|@netgroup]]
A ``@'' indicates a host by netgroup or user by netgroup. A single ``+'' matches all hosts or users. A host name with a leading ``-'' will
reject all matching hosts and all their users. A user name with leading ``-'' will reject all matching users from matching hosts.
Items are separated by any number of blanks and/or tab characters. A ``#'' indicates the beginning of a comment; characters up to the end of
the line are not interpreted by routines which search the file.
Host names are specified in the conventional Internet DNS dotted-domains ``.'' (dot) notation using the inet_addr(3) routine from the Inter-
net address manipulation library, inet(3). Host names may contain any printable character other than a field delimiter, newline, or comment
character.
For security reasons, a user's .rhosts file will be ignored if it is not a regular file, or if it is not owned by the user, or if it is
writable by anyone other than the user.
FILES
/etc/hosts.equiv The hosts.equiv file resides in /etc.
$HOME/.rhosts .rhosts file resides in $HOME.
EXAMPLES
bar.com foo
Trust user ``foo'' from host ``bar.com''.
+@allclient
Trust all hosts from netgroup ``allclient''.
+@allclient -@dau
Trust all hosts from netgroup ``allclient'' and their users except users from netgroup ``dau''.
SEE ALSO
rcp(1), rlogin(1), rsh(1), gethostbyname(3), inet(3), innetgr(3), ruserok(3), netgroup(5), ifconfig(8), yp(8)
BUGS
This manual page is incomplete. For more information read the source in src/lib/libc/net/rcmd.c or the SunOS manual page.
BSD
December 25, 2013 BSD