REXEC(1) manual page
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rexec -- remote execution client for
an exec server
rexec [ -a -c -d -h -n -s ] [--] host command
Rexec
calls the rexec(3)
routine to act as a client for the remote host’s rexecd(8)
server.
It asks that ‘‘command’’ be run on the host computer, using username/password
authentication. See rexec(3)
and rexecd(8)
for details of the protocol.
Rexec accepts the following options:
-a
- Do not set up an auxiliary
channel for standard error from command;
- the remote standard error and
output are then both returned on the local standard output. By default,
rexec asks that a separate channel be set up for diagnostic output from
the remote command.
-c
- Do not close remote standard input when local standard
input closes.
- Normally the standard input to the remote command is closed
when the local standard input is closed.
-d
- Turn on debugging information.
In particular the command sent to the
- remote host will be echoed.
-h
- Print
a usage message.
-
-n
- Explicitly prompt for name and password. Otherwise,
- $HOME/.netrc will be scanned for login information.
-s
- Do not echo signals
received by the rexec onto the remote
- process. Normally, signals which
can be trapped are passed on to the remote process; then, when you type
CNTRL-C, the remote process terminates as well.
--
- Signals end of options
to
- rexec to allow option switches in ‘‘command.’’
The only option that is very
useful is -n; even then, if you have not set up a password in $HOME/.netrc,
you should still be prompted.
rexec othermachine -- cat ">remote_file;
date" <local_file
will send local_file to the othermachine as remote_file.
When a signal is received locally, the signal is passed to the remote
command using blocking i/o. Even though it is only one byte, this may result
in delay in teminating the local command if communications are slow. Also,
the signal remains raised in the local rexec procedure, so typically the
remote command cannot ask for further user input after the signal is sent.
It is annoying to have to use the ‘‘--’’ flag to include options in the remote
command without quoting them. This is because the GNU getopt(3)
routine
is being called. This behavior may be corrected by setting the POSIXLY_CORRECT
environtmental variable.
Please send bug reports or system incompatibilities
to the author.
rexec(3)
, rexecd(8)
Michael Sadd
sadd@msc.cornell.edu
http://www.msc.cornell.edu/~sadd/
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