more Fedora Cookbook: VNC

John Summerfield debian at herakles.homelinux.org
Sat Jan 5 12:09:35 UTC 2008


Robert P. J. Day wrote:
>   yes, yes, it's really basic stuff but ...
> 
> http://www.crashcourse.ca/wiki/index.php/Configuring_VNC

Here are some things to play with once you have it up.
1.
   killall twm
The window decorations vanish
2.
   startkde
Play with kde for a while, then logout
3.
  gnome-session
play with that for a while, then logout
4.
   kwin&
   kicker&
5.
   killall kwin
   twm&

Note that when you don't have an active window manager, focus follows 
the mouse cursor.

6.
   vncserver -kill :1

On Fedora/RHEL clones I like to configure vnc thus:
[summer at potoroo ~]$ tail /etc/sysconfig/vncservers
# Use "-nohttpd" to prevent web-based VNC clients connecting.

# Use "-localhost" to prevent remote VNC clients connecting except when
# doing so through a secure tunnel.  See the "-via" option in the
# `man vncviewer' manual page.

VNCSERVERS="66:root 3:summer"
VNCSERVERARGS[3]="-geometry 1280x1024"
VNCSERVERARGS[66]="-geometry 1280x1024"

[summer at potoroo ~]$

On Debian, I use this approach:
[summer at potoroo ~]$ tail /etc/sysconfig/vncservers
# Use "-nohttpd" to prevent web-based VNC clients connecting.

# Use "-localhost" to prevent remote VNC clients connecting except when
# doing so through a secure tunnel.  See the "-via" option in the
# `man vncviewer' manual page.

VNCSERVERS="66:root 3:summer"
VNCSERVERARGS[3]="-geometry 1280x1024"
VNCSERVERARGS[66]="-geometry 1280x1024"

[summer at potoroo ~]$
summer at mail:~$ cat /etc/init.d/vnc
#!/bin/bash
# If no config, do nothing
#set -x
[ -f /etc/vncserver.conf ] || exit 0
function cfg()
{
     sed  </etc/vncserver.conf \
         -e 's=#.*$==g' \
         | grep -v '^$'
}


case "$1" in
   start)
         cfg | while read user port options
          do :
            echo Starting session for ${user} on ${port}
            eval passwdfile=~${user}/.vnc/passwd
            if [ ! -f  ${passwdfile} ] ; then
               echo Cannot start session for ${user}, no passwd file
               continue
            fi
            P=/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games
            [ "${user}" = "root" ] && 
P=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11
            su - ${user} -c "PATH=${P} vncserver ${options} ${port}"
          done
         ;;
   stop)
         cfg | while read user port options
          do :
            echo Stopping session for ${user} on ${port}
            eval passwdfile=~${user}/.vnc/passwd
            if [ ! -f  ${passwdfile} ] ; then
               echo Cannot stop session for ${user}, no passwd file
               continue
            fi
            su - ${user} -c "vncserver -kill ${port}"
          done
         ;;
  restart)
        ${0} stop
        ${0} start
        ;;
   *)
         echo ${0} '[start|stop]'
         ;;
esac

summer at mail:~$

which I organise to run in the appropriate runlevel(s).




-- 

Cheers
John

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