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VBINDIFF(1)		     Christopher J. Madsen		   VBINDIFF(1)

NAME
       vbindiff	- hexadecimal file display and comparison

SYNOPSIS
       vbindiff	file1 [	file2 ]

DESCRIPTION
       Visual Binary Diff (VBinDiff) displays files in hexadecimal and ASCII
       (or EBCDIC).  It	can also display two files at once, and	highlight the
       differences between them.  Unlike diff, it works	well with large	files
       (up to 4	GB).

   Viewing files
	Movement Keys
	-------------
	Up	Move one line (16 bytes) towards the beginning of the file
	Down	Move one line (16 bytes) towards the end of the	file
	Left	Move one byte towards the beginning of the file
	Right	Move one byte towards the end of the file
	PageUp	Move one page towards the beginning of the file
	PageDn	Move one page towards the end of the file
	Home	Move to	the beginning of the file
	End	Move to	the end	of the (shorter) file
	F	Search for a string or byte sequence
	G	Move to	a specified file position

       When displaying two files, both files move together.  If	bytes have
       been added or removed in	one of the files, you can adjust the
       comparison by moving just one of	the files.  To move only the top file,
       press "T".  To move only	the bottom file, press "B".  To	return to
       moving both files, press	the same key again.  (The window at the	bottom
       of the screen will indicate when	you are	moving only one	file.)

	Other Keys
	----------
	Enter  Move to the next	difference between the files
	Space  (same as	Enter)
	C      Toggle between ASCII and	EBCDIC display
	E      Edit currently displayed	section	of file
	Esc    Exit VBinDiff
	Q      Exit VBinDiff

       The "Enter" key will advance to the next	difference between the files
       (after those already displayed on the screen).  If there	are no more
       differences, it moves to	the end.

   Line	editor
       The line	editor is used to enter	search strings and file	positions.  It
       uses the	basic Emacs-style editing keys.

	Keys
	-----------------
	Ctrl-B,	Left	   Move	the cursor one character left
	Ctrl-F,	Right	   Move	the cursor one character right
	Ctrl-A,	Home	   Move	to the beginning of the	line
	Ctrl-E,	End	   Move	to the end of the line
	Ctrl-P,	Up	   Move	up in input history
	Ctrl-N,	Down	   Move	down in	input history
	Ctrl-H,	Backspace  Delete the character	to the left
	Ctrl-D,	Delete	   Delete the character	under the cursor
	Ctrl-K		   Delete from cursor to end of	line
	Insert		   Toggle between insert & overstrike mode
	Enter		   Finished entering text
	Esc		   Abort the operation

   Editing files
       You can press "E" to edit the current file.  When displaying two	files,
       this edits the one in the top window, unless you	are in "move bottom"
       mode.

       When editing, you can move the cursor around with the arrow keys.  Use
       TAB to switch between entering hexadecimal or ASCII (or EBCDIC)
       characters.  Press the Esc key when you are done.  You will be given
       the choice to save or discard your changes then.

       If you are displaying two files,	you can	use the	Enter key to copy a
       byte from the other file	into the one you are editing.

       You cannot scroll through the file while	editing, although you can save
       your changes and	then move to a different part of the file.  Also, you
       cannot insert or	delete bytes, only change them.

OPTIONS
	-L, --license	Display	license	information for	vbindiff
	-V, --version	Display	the version number
	    --help	Display	help information

BUGS
       Does not	work properly with files over 4	gigabytes.  It should be able
       to view the first 4 gigabytes ok, but the display only has room for 8
       hex digits of file position, and	the Goto box is	also limited to	8
       digits.

LICENSE
       VBinDiff	is free	software; you can redistribute it and/or modify	it
       under the terms of the GNU General Public License as published by the
       Free Software Foundation; either	version	2 of the License, or (at your
       option) any later version.

       VBinDiff	is distributed in the hope that	it will	be useful, but WITHOUT
       ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       FITNESS FOR A PARTICULAR	PURPOSE.  See the GNU General Public License
       for more	details.

       You should have received	a copy of the GNU General Public License along
       with VBinDiff (see the file COPYING); if	not, see
       <https://www.gnu.org/licenses/>.

AUTHOR
       Christopher J. Madsen <vbindiff .at. cjmweb.net>
       <https://www.cjmweb.net/vbindiff/> <https://github.com/madsen/vbindiff>

VBinDiff 3.0_beta5		  2017-09-10			   VBINDIFF(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | BUGS | LICENSE | AUTHOR

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