Computer Science


DISLOCATE(1)                                         DISLOCATE(1)

NAME
       Dislocate - disconnect and reconnect processes

SYNOPSIS
       dislocate [ program args...  ]

INTRODUCTION
       Dislocate  allows  processes to be disconnected and recon-
       nected to the terminal.  Possible uses:

              o   You can disconnect a process from a terminal at
                  work and reconnect from home, to continue work-
                  ing.

              o   After having your line be dropped due to noise,
                  you can get back to your process without having
                  to restart it from scratch.

              o   If you have a problem that you  would  like  to
                  show  someone,  you  can set up the scenario at
                  your own terminal, disconnect,  walk  down  the
                  hall, and reconnect on another terminal.

              o   If  you  are  in the middle of a great game (or
                  whatever) that does not allow you to save,  and
                  someone  else  kicks  you off the terminal, you
                  can disconnect, and reconnect later.

USAGE
       When run with no arguments, Dislocate tells you about your
       disconnected  processes  and  lets  you  reconnect to one.
       Otherwise, Dislocate runs the named program along with any
       arguments.

       By  default,  ^] is an escape that lets you talk to Dislo-
       cate itself.  At that point, you can disconnect (by press-
       ing ^D) or suspend Dislocate (by pressing ^Z).

       Any  Tcl  or  Expect  command  is  also acceptable at this
       point.  For example, to insert the contents of a the  file
       /etc/motd as if you had typed it, say:

            send -i $out [exec cat /etc/motd]

       To  send  the  numbers  1 to 100 in response to the prompt
       "next #", say:

            for {set i 0} {$i<100} {incr i} {
                expect -i $in "n"xt #"
                send -i $out "$i
            }

       Scripts can also be prepared and sourced in  so  that  you
       don't have to type them on the spot.

       Dislocate  is  actually just a simple Expect script.  Feel
       free to make it do what you want it  to  do  or  just  use
       Expect  directly, without going through Dislocate.  Dislo-
       cate understands a few special  arguments.   These  should
       appear  before any program name.  Each should be separated
       by whitespace.  If the arguments  themselves  takes  argu-
       ments, these should also be separated by whitespace.

       The -escape flag sets the escape to whatever follows.  The
       default escape is ^].

CAVEATS
       This program was written by the author as an  exercise  to
       show  that  communicating  with  disconnected processes is
       easy.  There are many features that could  be  added,  but
       that is not the intent of this program.

SEE ALSO
       Tcl(3), libexpect(3)
       "Exploring  Expect:  A  Tcl-Based  Toolkit  for Automating
       Interactive Programs" by Don Libes, O'Reilly  and  Associ-
       ates, January 1995.

AUTHOR
       Don Libes, National Institute of Standards and Technology

                          7 October 1993                        1

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