scotty(1)                                                        Tnm Tcl Extension                                                       scotty(1)

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NAME

       scotty - A Tcl shell including the Tnm extensions.

SYNOPSIS

       scotty ?fileName arg arg ...?
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DESCRIPTION

       scotty  is  a  Tcl interpreter with extensions to obtain status and configuration information about TCP/IP networks.  After startup, scotty
       evaluates the commands stored in .scottyrc and .tclshrc in the home directory of the user.

SCRIPT FILES

       If scotty is invoked with arguments then the first argument is the name of a script file and any additional arguments are made available to
       the  script  as  variables (see below).  Instead of reading commands from standard input scotty will read Tcl commands from the named file;
       scotty will exit when it reaches the end of the file.

       If you create a Tcl script in a file whose first line is
              #!/usr/local/bin/scotty2.1.11
       then you can invoke the script file directly from your shell if you mark the file  as  executable.   This  assumes  that  scotty  has  been
       installed  in the default location in /usr/local/bin;  if it's installed somewhere else then you'll have to modify the above line to match.
       Many UNIX systems do not allow the #! line to exceed about 30 characters in length, so be sure that the scotty executable can  be  accessed
       with a short file name.

       An even better approach is to start your script files with the following three lines:
              #!/bin/sh
              # the next line restarts using scotty 
              exec scotty2.1.11 "$0" "$@"
       This  approach  has three advantages over the approach in the previous paragraph.  First, the location of the scotty binary doesn't have to
       be hard-wired into the script:  it can be anywhere in your shell search path.  Second, it gets around the 30-character file name  limit  in
       the  previous  approach.   Third, this approach will work even if scotty is itself a shell script (this is done on some systems in order to
       handle multiple architectures or operating systems:  the scotty script selects one of several binaries to run).  The three lines cause both
       sh  and  scotty to process the script, but the exec is only executed by sh.  sh processes the script first;  it treats the second line as a
       comment and executes the third line.  The exec statement cause the shell to stop processing and instead to start up scotty to reprocess the
       entire  script.  When scotty starts up, it treats all three lines as comments, since the backslash at the end of the second line causes the
       third line to be treated as part of the comment on the second line.

VARIABLES

       Scotty sets the following Tcl variables:

       argc              Contains a count of the number of arg arguments (0 if none), not including the name of the script file.

       argv              Contains a Tcl list whose elements are the arg arguments, in order, or an empty string if there are no arg arguments.

       argv0             Contains fileName if it was specified.  Otherwise, contains the name by which scotty was invoked.

       tcl_interactive   Contains 1 if scotty is running interactively (no fileName was specified and standard input is a terminal-like device), 0
                         otherwise.

PROMPTS

       When  scotty is invoked interactively it normally prompts for each command with ``% ''.  You can change the prompt by setting the variables
       tcl_prompt1 and tcl_prompt2.  If variable tcl_prompt1 exists then it must consist of a Tcl script to output  a  prompt;   instead  of  out-
       putting a prompt scotty will evaluate the script in tcl_prompt1.  The variable tcl_prompt2 is used in a similar way when a newline is typed
       but the current command isn't yet complete; if tcl_prompt2 isn't set then no prompt is output for incomplete commands.

SEE ALSO

       Tnm(n), Tcl(n)

AUTHORS

       Juergen Schoenwaelder <schoenw@cs.utwente.nl>

Tnm                                                                                                                                      scotty(1)