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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, 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
	      dialog 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
	      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.	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
	      require  the user	to input a string as the answer. When inputing
	      the string, the BACKSPACE	key can	 be  used  to  correct	typing
	      errors.  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
	      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 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.

       --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
	      selected 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  con-
	      tain  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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