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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  differ-
     ences  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 mov-
     ing  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  (af-
     ter  those  already displayed on the screen).  If there are no more differ-
     ences, 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 can-
     not 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 dig-
     its 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 Soft-
     ware 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  de-
     tails.

     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/li-
     censes/>.

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)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=vbindiff&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

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