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DIALOG(1)		    General Commands Manual		     DIALOG(1)

       dialog -	display	dialog boxes from shell	scripts

       dialog --clear
       dialog --create-rc file
       dialog  [ --title title ] [ --clear ] [ --hline line ] [	--hfile	file ]

       Dialog is a program which allows	you to present a variety of  questions
       or  display  messages in	dialog box form	from a shell script.  The fol-
       lowing types of dialog objects are currently supported:

       yes/no box, menu	box, input box,	 message  box,	text  box,  info  box,
       checklist box, program box, radiolist box, ftree	and tree boxes.

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

       --create-rc file
	      Since  dialog  supports run-time configuration, this can be used
	      to dump a	sample configuration file to  the  file	 specified  by

       --title title
	      Specifies	 a title string	to be displayed	at the top of the dia-
	      log box.

       --hline line
	      Specifies	a line string to be displayed at the bottom of the di-
	      alog box.

       --hfile file
	      Specifies	a file to be displayed by pressing ? or	F1.

       Box Options

       --yesno text height width [ yes | no ]
	      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 fit in one line, it
	      will be automatically divided into multiple lines	at the	appro-
	      priate  points.  The text	string may also	contain	the sub-string
	      "\n" or newline characters `\n' to control line breaking explic-
	      itly.   This  dialog box is useful for asking questions that re-
	      quire 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.	A Yes button is	 selected  by  default
	      unless no	is specified.

       --msgbox	text height width
	      A	message	box is very similar to a yes/no	box.  The only differ-
	      ence 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 dialog 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,
	      dialog will exit immediately after displaying the	message	to the
	      user. The	screen is not cleared when dialog 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
	      An input box is useful when you want to ask questions  that  re-
	      quire  the  user	to input a string as the answer. When inputing
	      the string, the BACKSPACE	key can	be used	to correct typing  er-
	      rors.  If	 the  input string is longer than can be fitted	in the
	      dialog box, the input field will be scrolled. On exit, the input
	      string will be printed on	stderr.

       --textbox file height width
	      A	text box lets you display the contents of a text file in a di-
	      alog 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 descrip-
	      tion 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, or the number  keys  1-9.	 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  dialog  exits,  the	 tag  of the chosen menu entry will be
	      printed on stderr.

       --prgbox	command	height width
	      A	program	box lets you display output of command in dialog box.

       --checklist text	height width list-height [ tag item status ] ...
	      A	checklist box is similar to a menu box in that there are  mul-
	      tiple entries presented in the form of a menu. Instead of	choos-
	      ing one entry among the entries, each entry can be turned	on  or
	      off by the user. The initial on/off state	of each	entry is spec-
	      ified 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	checklist but it only allows a
	      single entry to be selected. One entry may initially  be	turned
	      on as specified by status.  On exit, the tag string of the entry
	      that is turned on	will be	printed	on stderr.

       --ftree file FS text height width menu-height
	      ftree box	is a dialog box	showing	the tree described by the data
	      from  the	 file  file.   The  data  in the file should look like
	      find(1)  output. For the find output,  the  field	 separator  FS
	      will  be '/'. If height and width	are positive numbers, they set
	      the absolute size	of the whole ftree box.	If  height  and	 width
	      are negative numbers, the	size of	the ftree box will be selected
	      automatically.  menu-height sets the height of the tree  subwin-
	      dow  inside the ftree box	and must be set.  text is shown	inside
	      the ftree	box above the tree subwindow and can  contain  newline
	      characters  '\n' to split	lines. One can navigate	in the tree by
	      pressing UP/DOWN or  '+'/'-',  PG_UP/PG_DOWN  or	'b'/SPACE  and
	      HOME/END or 'g'/'G'.  A leaf of the tree is selected by pressing
	      TAB or LEFT/RIGHT	the OK button and  pressing  ENTER.   The  se-
	      lected leaf (to be more exact, the full path to it from the root
	      of the tree) is printed to stderr.  If Cancel and	then ENTER  is
	      pressed,	nothing	 is  printed to	stderr.	 file may contain data
	      like find(1) output, as well as like the output of find(1)  with
	      -d option. Some of the transient paths to	the leaves of the tree
	      may be absent. Such data is corrected when fed from file.

       --tree FS text height width menu-height [ item ]	...
	      tree box is like ftree box with some exceptions. First, the data
	      is  not  entered	from a file, but from the command line as item
	      item ...	Second,	the data thus entered is not corrected in  any
	      way.   Thus,  the	data like the output of	find(1)	with -d	option
	      will look	incorrectly.

       1.  Create a sample configuration file by typing:

		 "dialog --create-rc <file>"

       2.  At start, dialog determines the settings to use as follows:

	   a)  if environment variable DIALOGRC	is set,	its  value  determines
	       the name	of the configuration file.

	   b)  if the file in (a) can't	be found, use the file $HOME/.dialogrc
	       as the configuration file.

	   c)  if the file in (b) can't	be found, use compiled in defaults.

       3.  Edit	the sample configuration file and copy it to some  place  that
	   dialog can find, as stated in step 2	above.

       DIALOGRC	      Define  this variable if you want	to specify the name of
		      the configuration	file to	use.

       $HOME/.dialogrc	   default configuration file

       Exit status is 0	if dialog is exited by pressing	the Yes	or OK  button,
       and 1 if	the No or Cancel button	is pressed. Otherwise, if errors occur
       inside dialog or	dialog is exited by pressing the  ESC  key,  the  exit
       status is -1.


       Text  files containing tab characters may cause problems	with text box.
       Tab characters in text files must first be expanded  to	spaces	before
       being displayed by text box.

       Screen update is	too slow.

       The  ftree and tree boxes do not	allow the tree to be moved to the left
       or to the right.	Thus, if there are many	levels of data,	 some  of  the
       leaves can be rendered invisible. A standard display with 80 characters
       allows for 17 levels to be visible. Deeper levels are  invisible.  How-
       ever, the navigation in the tree	and selection of leaves	do work.

       Savio Lam (

       Changes	by Anatoly A. Orehovsky	( (ftree and tree

				2 October 1998			     DIALOG(1)


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