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wish(1) 				 Tk Applications				  wish(1)

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NAME
       wish - Simple windowing shell

SYNOPSIS
       wish ?-encoding name? ?fileName arg arg ...?

OPTIONS
       -encoding name	   Specifies the encoding of the text stored in fileName.  This option is |
			   only recognized prior to the fileName argument.

       -colormap new	   Specifies that the window should have a new private	colormap  instead
			   of using the default colormap for the screen.

       -display display    Display (and screen) on which to display window.

       -geometry geometry  Initial  geometry to use for window.  If this option is specified, its
			   value is stored in the geometry global variable of  the  application's
			   Tcl interpreter.

       -name name	   Use	name  as the title to be displayed in the window, and as the name
			   of the interpreter for send commands.

       -sync		   Execute all X  server  commands  synchronously,  so	that  errors  are
			   reported  immediately.  This will result in much slower execution, but
			   it is useful for debugging.

       -use id		   Specifies that the main window for the application is to  be  embedded
			   in  the  window whose identifier is id, instead of being created as an
			   independent toplevel window.  Id must be specified in the same way  as
			   the	value  for  the  -use option for toplevel widgets (i.e.  it has a
			   form like that returned by the winfo id command).
			   Note that on some platforms this will only work correctly if id refers
			   to a Tk frame or toplevel that has its -container option enabled.

       -visual visual	   Specifies  the  visual  to use for the window.  Visual may have any of
			   the forms supported by the Tk_GetVisual procedure.

       --		   Pass all remaining arguments through to  the  script's  argv  variable
			   without  interpreting  them.   This	provides  a mechanism for passing
			   arguments such as -name to a script instead of having  wish	interpret
			   them.
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DESCRIPTION
       Wish  is  a  simple  program consisting of the Tcl command language, the Tk toolkit, and a
       main program that reads commands from standard input or from a file.  It  creates  a  main
       window and then processes Tcl commands.	If wish is invoked with arguments, then the first
       few arguments, ?-encoding name? ?fileName? specify the name of a script file, and, option-
       ally,  the  encoding of the text data stored in that script file.  A value for fileName is
       recognized if the appropriate argument does not start with "-".

       If there are no arguments, or the arguments do not specify a fileName, then wish reads Tcl
       commands  interactively	from  standard input.  It will continue processing commands until
       all windows have been deleted or until end-of-file is reached on standard input.  If there
       exists  a  file	".wishrc" in the home directory of the user, wish evaluates the file as a
       Tcl script just before reading the first command from standard input.

       If arguments to wish do specify a fileName, then fileName is treated  as  the  name  of	a
       script  file.   Wish will evaluate the script in fileName (which presumably creates a user
       interface), then it will respond to events until all windows have been deleted.	 Commands
       will  not be read from standard input.  There is no automatic evaluation of ".wishrc" when
       the name of a script file is presented on the wish command line, but the script	file  can
       always source it if desired.

       Note that on Windows, the wishversion.exe program varies from the tclshversion.exe program
       in an additional important way: it does not connect to a standard Windows console  and  is
       instead	a  windowed  program. Because of this, it additionally provides access to its own
       console command.

OPTION PROCESSING
       Wish automatically processes all of the command-line options described in the OPTIONS sum-
       mary  above.   Any  other  command-line	arguments besides these are passed through to the
       application using the argc and argv variables described later.

APPLICATION NAME AND CLASS
       The name of the application, which is used for purposes such as send  commands,	is  taken
       from  the -name option, if it is specified;  otherwise it is taken from fileName, if it is
       specified, or from the command name by which wish was invoked.  In the last two cases,  if
       the  name contains a "/" character, then only the characters after the last slash are used
       as the application name.

       The class of the application, which is used for purposes such as specifying options with a
       RESOURCE_MANAGER  property  or  .Xdefaults  file,  is the same as its name except that the
       first letter is capitalized.

VARIABLES
       Wish sets the following Tcl variables:

       argc	      Contains a count of the number of arg arguments (0 if none), not	including
		      the options described above.

       argv	      Contains	a  Tcl list whose elements are the arg arguments that follow a --
		      option or do not match any of the options described in  OPTIONS  above,  in
		      order, or an empty string if there are no such arguments.

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

       geometry       If the -geometry option is specified, wish copies its value into this vari-
		      able.  If the variable still exists after fileName has been evaluated, wish
		      uses the value of the variable in a wm geometry command  to  set	the  main
		      window's geometry.

       tcl_interactive
		      Contains	1  if  wish  is  reading commands interactively (fileName was not
		      specified and standard input is a terminal-like device), 0 otherwise.

SCRIPT FILES
       If you create a Tcl script in a file whose first line is
	      #!/usr/local/bin/wish
       then you can invoke the script file directly from your shell if you mark it as executable.
       This  assumes  that wish has been installed in the default location in /usr/local/bin;  if
       it is installed somewhere else then you will 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 wish 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 wish \
	      exec wish "$0" ${1+"$@"}
       This approach has three advantages over the approach in the  previous  paragraph.   First,
       the location of the wish binary does not 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 wish is itself a
       shell script (this is done on some systems in order to handle  multiple	architectures  or
       operating  systems:   the  wish script selects one of several binaries to run).	The three
       lines cause both sh and wish 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
       wish  to  reprocess  the entire script.	When wish 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.

       The end of a script file may be marked either by the physical end of the medium, or by the
       character, "\032" ("\u001a", control-Z).  If this character is present in  the  file,  the
       wish  application  will	read  text up to but not including the character.  An application
       that requires this character in the file may encode it as "\032", "\x1a", or "\u001a";  or
       may generate it by use of commands such as format or binary.

PROMPTS
       When  wish  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
       outputting  a  prompt  wish  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 is
       not yet complete; if tcl_prompt2 is not set then no prompt is output for  incomplete  com-
       mands.

KEYWORDS
       shell, toolkit

Tk					       8.0					  wish(1)
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