ubuntu 14.04 配置VNC server

VNC server的安装不用多说。但问题是，安装完成后，只能看到terminal，看不到桌面与菜单。原因是VNC默认是不启动桌面环境的。
虽然linuxer们坚持认为一个terminal就够了，但这不是我的菜，还是要搞出桌面才够爽。
vnc server启动时，会调用“~/.vnc/xstartup”进行初始化，我们的任务就是在这里启动桌面环境。
ubuntu支持两种桌面环境：unity与gnome，（unity是对gnome的一种深度定制）
还写以选择安装一种轻量级桌面环境，xfce4。

原来计划搞定三种桌面环境，最终却没搞定ubuntu 14.04上默认支持的unity :(
不管怎么，三种方式都放到下面的脚本中了，unity仅作参考了。

#!/bin/sh

# DESK_TYPE=xfce
DESK_TYPE=gnome
# DESK_TYPE=unity

# Uncomment the following two lines for normal desktop:
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
# exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
# x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
# x-window-manager &

echo $DESK_TYPE
# xfce desktop
if test $DESK_TYPE = xfce; then
x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
x-session=-manager &
xfdesktop & xfce4-panel &
xfce4-menu-plugin &
xfsettingsd &
xfconfd i&
xfwm4&
fi

# gnome desktop
if test $DESK_TYPE = gnome; then
gnome-session &
gnome-panel &
gnome-settings-daemon &
metacity &
nautilus -n &
gnome-terminal &
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings panel-main-menu "['F1']"
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings maximize "['KP_5']"
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings unmaximize "['F5']"
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings show-desktop "['d']"
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings switch-applications "['Tab']"
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings switch-group "['Above_Tab']"
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings switch-input-source "[]"
/usr/bin/gsettings set org.gnome.desktop.wm.keybindings switch-input-source-backward "[]"
/usr/bin/gsettings set org.gnome.settings-daemon.plugins.media-keys terminal "['t']"
fi

# unity desktop
if test $DESK_TYPE = unity; then
export DESKTOP_SESSION=ubuntu
export GDMSESSION=ubuntu
export STARTUP="/usr/bin/gnome-session --session=ubuntu"
$STARTUP &
fi

vnc配置好后，如果希望开机启动，可以建立文件“/etc/vncserver/vncservers.conf”用来配置需要启动的server

VNCSERVERS="1:hao-64 11:hao-64 12:hao-64 13:hao-64 14:hao-64 15:hao-64"
VNCSERVERARGS[1]="-geometry 1024x768"
VNCSERVERARGS[11]="-geometry 1680x1050"
VNCSERVERARGS[12]="-geometry 1366x768"
VNCSERVERARGS[13]="-geometry 1280x1024"
VNCSERVERARGS[14]="-geometry 1024x768"
VNCSERVERARGS[15]="-geometry 800x600"

再建立文件“/etc/init.d/vncserver”，用于开机启动配置文件

#!/bin/bash

unset VNCSERVERARGS
VNCSERVERS=""
[ -f /etc/vncserver/vncservers.conf ] && . /etc/vncserver/vncservers.conf
prog=$"VNC server"
start() {
 . /lib/lsb/init-functions
 REQ_USER=$2
 echo -n $"Starting $prog: "
 ulimit -S -c 0 >/dev/null 2>&1
 RETVAL=0
 for display in ${VNCSERVERS}
 do
 export USER="${display##*:}"
 if test -z "${REQ_USER}" -o "${REQ_USER}" == ${USER} ; then
 echo -n "${display} "
 unset BASH_ENV ENV
 DISP="${display%%:*}"
 export VNCUSERARGS="${VNCSERVERARGS[${DISP}]}"
 su ${USER} -c "cd ~${USER} && [ -f .vnc/passwd ] && vncserver :${DISP} ${VNCUSERARGS}"
 fi
 done
}
stop() {
 . /lib/lsb/init-functions
 REQ_USER=$2
 echo -n $"Shutting down VNCServer: "
 for display in ${VNCSERVERS}
 do
 export USER="${display##*:}"
 if test -z "${REQ_USER}" -o "${REQ_USER}" == ${USER} ; then
 echo -n "${display} "
 unset BASH_ENV ENV
 export USER="${display##*:}"
 su ${USER} -c "vncserver -kill :${display%%:*}" >/dev/null 2>&1
 fi
 done
 echo -e "\n"
 echo "VNCServer Stopped"
}
case "$1" in
start)
start $@
;;
stop)
stop $@
;;
restart|reload)
stop $@
sleep 3
start $@
;;
condrestart)
if [ -f /var/lock/subsys/vncserver ]; then
stop $@
sleep 3
start $@
fi
;;
status)
status Xvnc
;;
*)
echo $"Usage: $0 {start|stop|restart|condrestart|status}"
exit 1
esac

调用命令“update-rc.d vncserver defaults 99”刷新启动配置。
最后，重启系统