CON(1)                                                     CON(1)

     NAME
          con, telnet, cu, rx, xms, xmr - remote login, execution, and
          XMODEM file transfer

     SYNOPSIS
          con [ -dCrvs ] [ -l [ remuser ] ] [ -c cmd ] [net!]machine

          telnet [ -dCrn ] [net!]machine

          cu number

          rx [ -n ] [net!]machine [ command-word ... ]

          xms file

          xmr file

     DESCRIPTION
          Con connects to the computer whose network address is
          net!machine and logs in if possible.  With no options, the
          account name used on the remote system is the same as that
          on the local system.  Standard input and output go to the
          local machine.

          Options are:

          -l   with an argument causes remuser to be used as the
               account name on the remote system.  Without an argument
               this option disables automatic login and a normal login
               session ensues.

          -C   forces cooked mode, that is, local echo.

          -c   runs cmd as if it had been typed as a command from the
               escape mode.  This is used by cu.

          -v   (verbose mode) causes information about connection
               attempts to be output to standard error.  This can be
               useful when trying to debug network connectivity.

          -d   causes debugging information to be output to standard
               error.

          -r   suppresses printing of any carriage return followed by
               a new line.  This is useful since carriage return is a
               printable character in Plan 9.

          -s   strips received characters to 7 bits to forestall mis-
               interpretation of ASCII with parity as UTF.

     CON(1)                                                     CON(1)

          The control-\ character is a local escape.  It prompts with
          the local machine name and >>>.  Legitimate responses to the
          prompt are

          i    Send a quit [sic] signal to the remote machine.
          q    Exit.
          b    Send a break.
          .    Return from the escape.
          !cmd Run the command with the network connection as its
               standard input and standard output.  Standard error
               will go to the screen.  This is useful for transmitting
               and receiving files over the connections using programs
               such as xms.

          Telnet is similar to con, but uses the telnet protocol to
          communicate with the remote machine.  If standard input is a
          file or a pipe, the -n option causes telnet not to hang up
          the connection when it receives EOF on its standard input;
          instead it waits for the remote end to hang up.  It shares
          con's -C, -d, and -r options.

          Cu is a shell script that uses telco(4) and con to connect
          to a machine via a modem.  If the machine is equipped with a
          local modem, it is used.  Otherwise, the call is placed
          through Datakit.

          Rx executes one shell command on the remote machine as if
          logged in there, but with local standard input and output.
          A rudimentary shell environment is provided.  If the target
          is a Plan 9 machine, $service there will be rx.

          Network addresses for both con and rx have the form
          network!machine.  Supported networks are those listed in
          /net.

          The commands xms and xmr respectively send and receive a
          single file using the XMODEM protocol.  They use standard
          input and standard output for communication and are intended
          for use with con.

     EXAMPLES
          rx kremvax cat file1 >file2
               Copy remote file1 to local file2.

          rx kremvax cat file1 '>file2'
               Copy remote file1 to remote file2.

          eqn paper | rx kremvax troff -ms | rx deepthought lp
               Parallel processing: do each stage of a pipeline on a
               different machine.

     SOURCE

     CON(1)                                                     CON(1)

          /sys/src/cmd/con  for con, xms, and xmr.
          /sys/src/cmd/ip   for telnet.
          /rc/bin/cu

     BUGS
          Under rx, a program that should behave specially towards
          terminals may not: e.g., remote shells will not prompt.
          Also under rx, the remote standard error and standard output
          are combined and go inseparably to the local standard out-
          put.