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WHIPTAIL


Section: User Commands (1)
Updated: 31 January 2007
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NAME

whiptail – display dialog boxes from shell scripts
 

SYNOPSIS

whiptail

[
--title

title

]
[
--backtitle

backtitle

]
[
--clear

]
[
--default-item

string

]
[
--defaultno

]
[
--fb

]
[
--nocancel

]
[
--yes-button

text

]
[
--no-button

text

]
[
--ok-button

text

]
[
--cancel-button

text

]
[
–noitem

[
]
–output-fd

fd

]
[
--separate-output

]
[
--scrolltext

]
[
--topleft

]
box-options

 

DESCRIPTION

whiptail

is a program that will let you present a variety of questions or
display messages using dialog boxes from a shell script. Currently,
these types of dialog boxes are implemented:

yes/no box, menu box, input box,

message box, text box, info box,

checklist box, radiolist box gauge box, and

password box.

 

OPTIONS


–clear


The screen will be cleared to the
screen attribute on exit.

This doesn’t work in an xterm (and descendants) if alternate screen
switching is enabled, because in that case slang writes to (and clears)
an alternate screen.

–defaultno


The dialog box will open with the cursor over the
No button.

–default-item string


Set the default item in a menu box.
Normally the first item in the box is the default.
–fb


Use full buttons. (By default,
whiptail

uses compact buttons).

–nocancel


The dialog box won’t have a
Cancel button.

–yes-button text


Set the text of the
Yes button.

–no-button text


Set the text of the
No button.

–ok-button text


Set the text of the
Ok button.

–cancel-button text


Set the text of the
Cancel button.

–noitem


The menu, checklist and radiolist widgets will display tags only, not
the item strings. The menu widget still needs some items specified,
but checklist and radiolist expect only tag and status.
–separate-output


For checklist widgets, output result one line at a time, with no
quoting. This facilitates parsing by another program.
–output-fd fd


Direct output to the given file descriptor. Most
whiptail

scripts
write to standard error, but error messages may also be
written there, depending on your script.

–title title


Specifies a
title

string to be displayed at the top of the dialog box.

–backtitle backtitle


Specifies a
backtitle

string to be displayed on the backdrop, at the top of the screen.

–scrolltext


Force the display of a vertical scrollbar.
–topleft


Put window in top-left corner.
Box Options


–yesno text height width


A yes/no dialog box of size

height

rows by
width

columns will be displayed. The string specified by
text

is displayed inside the dialog box. If this string is too long to be fit
in one line, it will be automatically divided into multiple lines at
appropriate places. The
text

string may also contain the sub-string
"n"

or newline characters
`n’

to control line breaking explicitly. This dialog box is useful for
asking questions that require the user to answer either yes or no.
The dialog box has a Yes button and a No

button, in which the user can switch between by pressing the
TAB key.

–msgbox text height width


A message box is very similar to a yes/no box.

The only difference between a
message

box and a
yes/no

box is that a
message

box has only a single
OK

button. You can use this dialog box to display any message you like.
After reading the message, the user can press the
ENTER

key so that
whiptail

will exit and the calling shell script can continue its operation.

–infobox text height width


An info box is basically a message box.

However, in this case,
whiptail

will exit immediately after displaying the message to the user. The
screen is not cleared when
whiptail

exits, so that the message will remain on the screen until the calling
shell script clears it later. This is useful when you want to inform
the user that some operations are carrying on that may require some
time to finish.

–inputbox text height width [init]


An input box is useful when you want to ask questions that

require the user to input a string as the answer. If init is supplied
it is used to initialize the input string.
When inputing the
string, the
BACKSPACE

key can be used to correct typing errors. If the input string is longer than
the width of the dialog box, the input field will be scrolled. On exit,
the input string will be printed on
stderr.

–passwordbox text height width [init]


A password box is similar to an input box, except the text the user

enters is not displayed. This is useful when prompting for passwords or other
sensitive information. Be aware that if anything is passed in "init", it
will be visible in the system’s process table to casual snoopers. Also, it
is very confusing to the user to provide them with a default password they
cannot see. For these reasons, using "init" is highly discouraged.

–textbox file height width


A text box lets you display the contents of a text file in a

dialog box. It is like a simple text file viewer. The user can move
through the file by using the
UP/DOWN, PGUP/PGDN

and HOME/END keys available on most keyboards.

If the lines are too long to be displayed in the box, the
LEFT/RIGHT

keys can be used to scroll the text region horizontally. For more
convenience, forward and backward searching functions are also provided.

–menu text height width menu-height [ tag item ]

As its name suggests, a
menu

box is a dialog box that can be used to present a list of choices in
the form of a menu for the user to choose. Each menu entry consists of a
tag string and an item string. The

tag

gives the entry a name to distinguish it from the other entries in the
menu. The
item

is a short description of the option that the entry represents. The
user can move between the menu entries by pressing the
UP/DOWN

keys, the first letter of the
tag

as a hot-key. There are
menu-height

entries displayed in the menu at one time, but the menu will be
scrolled if there are more entries than that. When
whiptail

exits, the
tag

of the chosen menu entry will be printed on
stderr.

–checklist text height width list-height [ tag item status ]

A checklist box is similar to a menu box in that there are

multiple entries presented in the form of a menu.
You can select and deselect items using the SPACE key.
The initial on/off state of each entry is specified by
status.

On exit, a list of the
tag

strings of those entries that are turned on will be printed on
stderr.


–radiolist text height width list-height [ tag item status ]

A radiolist box is similar to a menu box. The only difference is

that you can indicate which entry is currently selected, by setting its
status to on.


–gauge text height width percent

A gauge box displays a meter along the bottom of the box.

The meter indicates a percentage. New percentages are read from
standard input, one integer per line. The meter is updated
to reflect each new percentage. If stdin is XXX, then subsequent
lines up to another XXX are used for a new prompt.
The gauge exits when EOF is reached on stdin.



 

NOTES

whiptail interprets arguments starting with a dash "-" as being arguments.
To avoid this, and start some text in, for example, a menubox item, with a
dash, whiptail honours the getopt convention of accepting the special
argument "–" which means that all following arguments with dashes are to
be treated verbatim and not parsed as options.
 

DIAGNOSTICS

Exit status is 0 if
whiptail is exited by pressing the Yes or OK

button, and 1 if the
No or Cancel

button is pressed. Otherwise, if errors occur inside
whiptail

or
whiptail

is exited by pressing the
ESC

key, the exit status is -1.
 

AUTHOR

Based on the man page for dialog(1) by:

Savio Lam ([email protected]) – version 0.3

Stuart Herbert ([email protected]) – patch for version 0.4

Modifications for whiptail by:

Enrique Zanardi ([email protected])

Alastair McKinstry ([email protected])



 

Index



NAME

SYNOPSIS

DESCRIPTION

OPTIONS

NOTES

DIAGNOSTICS

AUTHOR



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