wish - Simple windowing shell
wish ?fileName arg arg ...?
- -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.
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 no arguments, or with a first argument
that starts with ``-'', then it 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 wish is invoked with an initial fileName argument, 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 in this
case, but the script file can always source it if desired.
Wish automatically processes all of the command-line options
described in the OPTIONS summary above.
Any other command-line arguments besides these are passed through
to the application using the argc and argv variables
described later.
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.
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 (not
including the options described above), 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 wish was invoked.
- geometry
-
If the -geometry option is specified, wish copies its
value into this variable. 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.
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'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 wish executable
can be accessed with a short file name.
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 isn't yet complete;
if tcl_prompt2 isn't set then no prompt is output for
incomplete commands.
shell, toolkit
Copyright © 1991-1994 The Regents of the University of California.
Copyright © 1994 Sun Microsystems, Inc.
Copyright © 1995 Roger E. Critchlow Jr.