RCPU(1) RCPU(1)
NAME
rcpu, rimport, rexport, rconnect - connection to CPU server
SYNOPSIS
rcpu [ -u user ] [ -k keypattern ] [ -P patternfile ] [ -p ]
[ -h host ] [ -c cmd arg ... ]
rimport [ -abcCnq ] [ -s name ] [ -u user ] [ -k keypattern
] [ -p ] host tree [ mountpoint ]
rexport [ -abcCnq ] [ -s remotename ] [ -m remotemtpt ] [ -u
user ] [ -k keypattern ] [ -P patternfile ] [ -p ] tree host
[ remotecmd arg ... ]
rconnect [ -u user ] [ -k keypattern ] [ -p ] host
remotescript localcommand arg ...
DESCRIPTION
Rcpu runs commands from rc(1) on a cpu server with the local
namespace exported to the remote side under /mnt/term. The
current directory, interrupt notes, standard file descrip-
tors 0,1,2 and /dev/cons are passed to the remote side. The
command to run can be passed with -c cmd arg ..., otherwise
an interactive shell is started. The user's profile is run
before the command with $service set to cpu to allow further
customization of the environment (see rc(1) for more infor-
mation). The cpu server can be specified with -h host, oth-
erwise it defaults to the environment variable $cpu or is
looked up from ndb(6).
Rimport mounts a remote directory tree from a cpu server
host into the local namespace at mountpoint. When mountpoint
is omitted, it is set the same as tree. When the -s name
option is present, the service is also posted to /srv/name
allowing it to be mounted in other namespaces.
Rexport is the reverse of rimport, exporting a local direc-
tory tree to the server host and optionally executing
remotecmd arg on the server side after posting the service
to /srv/remotename or mounting it at remotemtpt.
Rconnect is a helper program handling client side connection
setup for the commands listed above. The rcpu protocol
starts by setting up a mutual authenticated and encrypted
TLS connection using tlssrv(8) followed by the client send-
ing an rc(1) remotescript file to the server which gets exe-
cuted under the authenticated user with file descriptors
0,1,2 cross connected to file descriptors 0,1 of the client
side running localcommand over the encrypted connection.
Page 1 Plan 9 (printed 12/22/24)
RCPU(1) RCPU(1)
The common options are:
-a -b -c -C -n -q
Specifies the mount options (see bind(1)) for rimport
and rexport.
-P patternfile
Restricts the set of exported files (see exportfs(4))
for rcpu and rexport.
-u user
Remote user id to authenticate as.
-k keypattern
Use keypattern to select a key to authenticate to the
remote side (see auth(2)).
-p Protect the connection against connection resets by
establishing aan(8) tunnel.
FILES
/rc/bin/service/tcp17019
SOURCE
/rc/bin/rcpu
/rc/bin/rimport
/rc/bin/rexport
/rc/bin/rconnect
SEE ALSO
rc(1), con(1), exportfs(4), tlssrv(8), aan(8)
Page 2 Plan 9 (printed 12/22/24)