cmdtool - run a shell (or program) using the SunView text facility

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SYNOPSIS

AVAILABILITY

DESCRIPTION

cmdtool is the standard SunView support facility for shells and other programs. When invoked, cmdtool runs a program (usually a shell) in a text-based command subwindow. Characters typed on the keyboard are inserted at the caret. If the program is a shell, that shell accepts and runs commands in the usual manner. cmdtool also supports programs that perform cursor motions directly, such as vi.1

The text of the current command line can be edited using normal textedit.1 functions. The command subwindow displays a log of the session, which can be scrolled through using the scrollbar (unless the command does cursor motion). This log can be edited, and saved by choosing the `Store as New File' item in the text facility's pop-up menu. The `Split View' command, also in the pop-up menu, can be used to create two or more independent views of the log.

OPTIONS

-C

Console cmdtool. Display console messages in this cmdtool, which might otherwise appear in unexpected places on the workstation screen. Since a cmdtool window can be scrolled, console error messages can be recorded for later examination.

-M bytes

Set the log to wrap-around after the indicated number of bytes.

-P count

Checkpoint the log after every set of count editing operations.

generic-tool-arguments

cmdtool accepts the generic tool arguments listed in sunview.1

program [ program-arguments ]

If a program argument is present, cmdtool runs it and passes any remaining arguments to that program. If no program is given, cmdtool runs the program indicated by the SHELL environment variable, or /usr/bin/sh by default.

USAGE

Refer to [a manual with the abbreviation SVBG] for details on how to use cmdtool.

Defaults Options

The following options can be configured as default settings using defaultsedit.1

/Tty/Append_only_log

When set to TRUE (the standard default) only command lines can be edited. FALSE allows the entire log to be edited. (See also the description of Enable Edit below.)

/Tty/Insert_makes_caret_visible

This entry allows you to specify the method for displaying the editing caret.

Same_as_for_text

Use the setting specified in the defaults for the Text category (the standard default).

If_auto_scroll

If the caret is showing, and an inserted NEWLINE would position it below the bottom of the screen (as determined by /Text/Lower_context), the text is scrolled to keep the caret showing. The number of lines scrolled is determined by the /Text/Auto_scroll_by default. (See textedit.1 for more information.)

Always

Scroll the caret back into view whenever input would position it off the screen.

/Tty/Checkpoint_frequency

If set to 0 (the standard default) no checkpointing is done. For any value greater than zero, a checkpoint is made each time the indicated number editing operations has been performed since the last checkpoint. Each character typed, each Paste, and each Cut counts as an editing operation. At each checkpoint, an updated copy of the log is saved in a file with a name that is constructed by appending two percent signs (%%) to the name of the log file. By default, the log file has a name of the form /tmp/tty.txt.pid (pid is the process ID number of cmdtool); the corresponding checkpoint file has a name of the form /tmp/tty.txt.nnnnnn%%.

/Tty/Text_wraparound_size

If set to 0 (the standard default) no wrap-around takes place; the log file grows without a specified limit. For values greater than zero, wrap-around occurs whenever the indicated number of characters have been written to the log since the last wrap-around. Characters that are pushed over the top are replaced by the message:

*** Text is lost because the maximum edit log size has been exceeded. ***

/Text/Edit_back_char

Set the character for erasing to the left of the caret. Note: in cmdtool, the `stty erase' command has no effect. Text-based tools refer only to the defaults database key settings. The default is DELETE.

/Text/Edit_back_word

Set the character for erasing the word to the left of the caret. The standard default is CTRL-W.

/Text/Edit_back_line

Set the character for erasing all characters to the left of the caret. Note: `stty kill' has no effect in cmdtool. The standard default is CTRL-U.

The Command Subwindow

The command subwindow is based on the text facility, which is described in [a manual with the abbreviation SVBG]. It uses the same pop-up menu as the text facility, but with an additional pull-right `Cmd Modes' menu, which contains the `Enable Editing' and `Disable Scrolling' items.

Command subwindows support cursor motions, using a new /etc/termcap entry called sun-cmd. Command subwindows automatically set the TERM environment variable to sun-cmd. So, if you rlogin.1c to a machine that does not have an entry for sun-cmd in its /etc/termcap file, the error message `Type sun-cmd unknown' results. To rectify this, type the command `set TERM=sun'. Programs written using the curses.3v library package will work in a command subwindow, but programs hard-coded for sun-type terminals may not. When supporting a program that performs cursor motions, the command subwindow automatically takes on the characteristics of a tty subwindow (as with shelltool.1 When that program terminates or sleeps, the full command subwindow functionality is restored.

cmdtool supports programs that use CBREAK and NO ECHO terminal modes. This support is normally invisible to the user. However, programs that use RAW mode, such as rlogin.1c and script.1 inhibit command-line editing with the mouse. In this case, however, tty-style ERASE, word-kill and line-kill characters can still be used to edit the current command line.

The Command Subwindow Menu

Copy, then Paste

When there is a current selection, the entire menu item is active. The selection is copied both to the clipboard and to the location pointed to by the caret. When there is no selection, but there is text on the clipboard, only Paste is active. In this case, the contents of the clipboard are copied to the caret. When there is no selection and the clipboard is empty, this item is inactive. `Copy then Paste' is a generic text menu item. Refer to textedit.1 for information about other generic text menu items.

Enable Edit

Disable Edit

Toggle to allow or disallow editing on the log.

Disable Scrolling

Enable Scrolling

Toggle between a scrollable, editable window, or a display that supports cursor motions. Note: for well-behaved programs (such as vi.1 this switching is performed automatically (so this menu item is seldom needed).

Accelerators

Text facility accelerators that are especially useful in command subwindows are described here. See
textedit.1 for more information.

CTRL-RETURN

Position the caret at the bottom, and scroll it into view as determined by /Text/Lower_context.

META-P

Choose the `Copy, then Paste' menu item.

CAPS-lock

F1

Toggle between all-upper-case keyboard input, and mixed-case.

ENVIRONMENT

The environment variables LC_CTYPE, LANG, and LC_default control the character classification throughout cmdtool. On entry to cmdtool, these environment variables are checked in the following order: LC_CTYPE, LANG, and LC_default. When a valid value is found, remaining environment variables for character classification are ignored. For example, a new setting for LANG does not override the current valid character classification rules of LC_CTYPE. When none of the values is valid, the shell character classification defaults to the POSIX.1 ``C'' locale.

FILES

/tmp/tty.txt.pid

log file

~/.textswrc

~/.ttyswrc

usr/lib/.text_extras_menu

/etc/termcap

SEE ALSO

[a manual with the abbreviation INSTALL]
[a manual with the abbreviation SVBG]

BUGS

Typing ahead while cmdtool changes between its scrollable and cursor motion modes will sometimes freeze cmdtool .

Full terminal emulation is not complete. Some manifestations of this deficiency are:

• File completion in the C shell does not work.
• Enhanced display of text is not supported.

Created by unroff & hp-tools. © somebody (See intro for details). All Rights Reserved. Last modified 11/5/97