vncserver(1)               Virtual Network Computing              vncserver(1)


       vncserver - start or stop a VNC server


       vncserver  [:display#]  [-name  desktop-name]  [-geometry widthxheight]
       [-depth depth] [-pixelformat format] [Xvnc-options...]
       vncserver -kill :display#


       vncserver is used to start a VNC (Virtual Network  Computing)  desktop.
       vncserver  is a Perl script which simplifies the process of starting an
       Xvnc server.  It runs Xvnc with appropriate options and starts  some  X
       applications to be displayed in the VNC desktop.

       vncserver  can  be  run  with  no  options at all. In this case it will
       choose the first available display number (usually :1), start  Xvnc  as
       that  display,  and  run  a  couple  of  basic  applications to get you
       started. You can also specify the display number, in which case it will
       use that number if it is available and exit if not, eg:

              vncserver :13

       Editing  the file $HOME/.vnc/xstartup allows you to change the applica-
       tions run at startup (but note that this will not  affect  an  existing


       You  can  get a list of options by giving -h as an option to vncserver.
       In addition to the options listed below, any unrecognised options  will
       be passed to Xvnc - see the Xvnc man page, or "Xvnc -help" for details.

       -name desktop-name
              Each desktop has a name which may be displayed by the viewer. It
              defaults  to  "host:display#  (username)"  but you can change it
              with this option.  It is passed in to the  xstartup  script  via
              the $VNCDESKTOP environment variable, allowing you to run a dif-
              ferent set of applications according to the name of the desktop.

       -geometry widthxheight
              Specify  the  size  of  the  desktop  to  be created. Default is

       -depth depth
              Specify the pixel depth in bits of the desktop  to  be  created.
              Default is 16, other possible values are 8, 15 and 24 - anything
              else is likely to cause strange behaviour by applications.

       -pixelformat format
              Specify pixel format for server to use (BGRnnn or RGBnnn).   The
              default  for depth 8 is BGR233 (meaning the most significant two
              bits represent blue, the next three green, and the least signif-
              icant  three  represent red), the default for depth 16 is RGB565
              and for depth 24 is RGB888.

       -cc 3  As an alternative to the default TrueColor visual,  this  allows
              you  to  run  an Xvnc server with a PseudoColor visual (i.e. one
              which uses a colour map or palette), which  can  be  useful  for
              running  some  old X applications which only work on such a dis-
              play.  Values other than 3 (PseudoColor) and 4  (TrueColor)  for
              the  -cc option may result in strange behaviour, and PseudoColor
              desktops must be 8 bits deep.

       -kill :display#
              This kills a VNC desktop previously started with vncserver.   It
              does  this  by  killing  the  Xvnc  process, whose process ID is
              stored in the file "$HOME/.vnc/".  It  actually
              ignores  anything  preceding a ":" in its argument.  This can be
              useful so you can write "vncserver -kill $DISPLAY", for  example
              at  the end of your xstartup file after a particular application


       Several VNC-related files are found in the directory $HOME/.vnc:

              A shell script specifying X applications to be run  when  a  VNC
              desktop  is started.  If it doesn’t exist, vncserver will create
              a new one which runs a couple of basic applications.

              The VNC password file.

              The log file for Xvnc and applications started in xstartup.

              Identifies the Xvnc process ID, used by the -kill option.


       vncviewer(1), vncpasswd(1), vncconfig(1), Xvnc(1)


       Tristan Richardson, RealVNC Ltd.

       VNC was originally developed by the  RealVNC  team  while  at  Olivetti
       Research Ltd / AT&T Laboratories Cambridge.  It is now being maintained
       by RealVNC Ltd.  See for details.

RealVNC Ltd                       03 Mar 2005                     vncserver(1)

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