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 x2vnc(1)                                                           x2vnc(1)

      x2vnc - a dual-screen hack

      x2vnc <options> host:0
      [ -display display ]
      [ -version ]
      [ -shared ]
      [ -north ] [ -south ] [ -east ] [ -west ]
      [ -hotkey key ]
      [ -passwdfile passwd-file ]
      [ -resurface ]
      [ -edgewidth width ]
      [ -desktop desktop-number ]
      [ -timeout seconds ]
      [ -wheelhack ]
      [ -nowheel ]
      [ -reversewheel ]
      [ -scrolllines lines ]
      [ -navhack ]
      [ -mac ]
      [ -trimsel ]
      [ -noblank ]
      [ -lockdelay seconds ]
      [ -debug ]
      [ -accel multiplier ]
      [ -noreconnect ]
      [ -tunnel ]
      [ -via host ]

      x2vnc will let you use two screens on two different computers as if
      they were connected to the same computer. The computer with the 'main'
      keyboard must be running X-window, and the second computer should have
      a VNC server running which will update the contents on the actual
      screen. This means Xvnc is not suitable, but WinVNC is.

      For up-to-date information on x2vnc, see the x2vnc home page:

      -display display
           The X windows display to connect from.

           Allow multiple connections to the same VNC server.

      -north, -south, -east, -west,
           Determine which edge leads to the other screen.

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 x2vnc(1)                                                           x2vnc(1)

      -passwdfile password-file
           With this option you can start x2vnc without entering a password.
           The file is created by vncpasswd which comes with the X-windows
           VNC software. If the file does not exist, x2vnc will ask for a
           password and create the file.

           This option will cause the trigger window to re-surface
           automatically if it is covered up by another window.

      -hotkey key
           This option allows you to select which key to use to warp the
           pointer to and from second computer. The default is "Control-
           F12", any combination of modifiers can be used, such as "shift-
           alt-meta-ctrl-F1" (or s-a-m-c-F1).

      -edgewidth pixels
           This is a workaround for some X servers which do not allow the
           mouse to go all the way to the edge of the screen. By setting
           this to 2 or greater, the mouse will be able to reach the x2vnc
           window and thus warp to the windows machine. The default value is
           1. If you set this value to 0, no border will be generated, which
           means you will have to use hotkeys to switch to the oher screen.

      -desktop desktop-number
           With this option, you can make x2vnc non-sticky. This may not
           work with all window-managers. Note that the first desktop is
           usually 0 (zero). If you want x2vnc to appear on the last
           (rightmost) desktop, use -1.  This option was especially created
           with the sawfish edgeflipping in mind, normally you would use "-
           west -desktop 0" or "-east -destkop -1" with Sawfish to allow
           edgeflipping to work normally.

      -timeout seconds
           This options tells x2vnc how long to wait before warping the
           cursor back to the X screen if there is no activity. The reason
           for this is that some screen savers, such as xscreensaver, cannot
           activate while x2vnc is in control of the cursor. The default
           value is 590 seconds, which is equivalent to 9 minutes and 50
           seconds. Using a value of 0 will disable timeouts completely.

           This option does nothing and is left for backwards compatibility

           This will make x2vnc tranlate all mouse wheel events into arrow
           up/down events. Only use this if your VNC server doesn't
           understand mouse wheel events.

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 x2vnc(1)                                                           x2vnc(1)

           Invert the up/down direction of the mouse wheel emulation.  This
           option only works if -wheelhack is used.

      -scrolllines lines
           When using mouse wheel emulation, this selects how many up/down
           events will be sent for each tick of the mouse wheel.

           This will map button 6 & 7 to Alt+Left/Right, which will allow
           the navigation buttons on some mice to behave more like they do
           in windows.

      -mac Macintosh specific mode, maps second mouse button to control-

           If the X selection looks like a URL, trim leading and trailing
           spaces.  This can be useful for pasting URLs into a browser.

           Prevent screen blanking on the remote desktop while you are
           working on the local desktop. Requires the MIT-SCREEN-SAVER or
           XIDLE extension to work properly. If neither of these extensions
           are present, the remote desktop will always be kept from

      -lockdelay seconds
           This is only meaningful when using the -noblank option. When this
           option is present. With this option, x2vnc will not attempt to
           wake up the remote screen if you have been idle for more than the
           specified amount of time. This is useful if you need a password
           to unlock the remote screen and would rather leave it blanked
           until you need it.

           This option will make x2vnc print out information about events it
           sends and receives to stderr for debugging purposes.

      -accel multiplier
           This option allows you to control the speed of the mouse on the
           remote screen. 2.0 means twice as fast, 0.5 means half as fast.
           Default is 1.0. Note that this is multiplied with a number which
           x2vnc calculates based on screen sizes and other factors.

           This option prevents x2vnc from automatically reconnecting if the
           connection is closed.

           This option makes x2vnc start an SSH tunnel to the machine being

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 x2vnc(1)                                                           x2vnc(1)

           controlled by x2vnc. The SSH command used can be changed by
           setting the X2VNC_SSH_CMD environment variable. The default is:
           ssh -A -X -f -L "$LOCALPORT:$REMOTEHOST:$REMOTEPORT" \
           "$GATEWAYHOST" 'ssh-add;sleep 60'

      -via host
           This is similar to -tunnel, but tunnels through a host different
           than the machine being controlled by x2vnc.

      Most common usage:
      x2vnc -passwdfile $HOME/.vncpasswd -resurface host:0

      To make x2vnc start (and re-start) automatically, add the following to
      your your X startup file (usually .xinitrc):

      while :;
        x2vnc -passwd $HOME/.vncpasswd -resurface host:0
        sleep 2

      Fredrik Hbinette,

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