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vncpasswd



SYNOPSIS

       vncpasswd [file]
       vncpasswd -t
       vncpasswd -f


DESCRIPTION

       The  vncpasswd utility should be used to create and change
       passwords for the  TightVNC  server  authentication.  Xvnc
       uses  such  passwords  when started with the -rfbauth com­
       mand-line option  (or  when  started  from  the  vncserver
       script).

       vncpasswd allows to enter either one or two passwords. The
       first password is the primary one, the second password can
       be  used  for view-only authentication. Xvnc will restrict
       mouse and keyboard input from  clients  who  authenticated
       with  the  view-only  password. The vncpasswd utility asks
       interactively if it should set the second password.

       The  password  file  name  defaults  to  $HOME/.vnc/passwd
       unless  the  -t  command-line  option  was  used  (see the
       OPTIONS section below). The $HOME/.vnc/ directory will  be
       created if it does not exist.

       Each  password  has  to  be  longer  than  five characters
       (unless the -f  command-line  option  was  used,  see  its
       description  below).   Only the first eight characters are
       significant. If the primary password  is  too  short,  the
       program  will  abort.  If  the  view-only  password is too
       short, then only the primary password will be saved.

       Unless a  file  name  was  provided  in  the  command-line
       explicitly, this utility may perform certain sanity checks
       to prevent writing a password  file  into  some  hazardous
       place.

       If at least one password was saved successfully, vncpasswd
       will exit with status code 0. Otherwise the returned  sta­
       tus code will be set to 1.


OPTIONS

       -t     Write  passwords into /tmp/$USER-vnc/passwd, creat­
              ing the /tmp/$USER-vnc/ directory if  it  does  not
              exist,  and checking the permissions on that direc­
              tory (the mode must be 700). This option  can  help
              to improve security when your home partition may be
              shared via network (e.g. when using NFS).

       -f     Filter mode. Read plain-text passwords from  stdin,
              write  encrypted  versions  to  stdout.  One or two
              passwords (full-control and view-only) can be  sup­
              plied  in  the  input  stream, newline terminates a

       Tim Waugh <twaugh@redhat.com>,
       Constantin Kaplinsky <const@ce.cctpu.edu.ru>

                            March 2003               vncpasswd(1)
  
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