WorkingEnv

Introduction

apt-remove-duplicate-source-entries.py is to remove the source entries duplicated of apt.
recompile_git.sh is to recompile git with source code.
initProxy.sh is to configure the proxy settings (including apt proxy and wget proxy).
config.sh is to do basic system configuration after installing your Ubuntu.
config_remote_desktop.sh is to configure Ubuntu16.04 via remote shell to enable remote desktop.
setPasswd.sh is to configure the password of VNC.

About config_remote_desktop.sh

Configuring vino-server is necessary to enable remote desktop whereas it's impossible to configure directly via remote shell.
The keys are:

to make the user login automatically as the remote desktop needs to read some config files in the home directory.
to set the DBUS_SESSION_BUS_ADDRESS environment variable.
to disable keyring to enable vino-passwd via remote shell.

USAGE:
./config_remote_desktop.sh to make the user login automatically, reboot is necessary.
./config_remote_desktop.sh [PORT] again after the next login to configure the vino-server. The [PORT] is used for the remote desktop. By default, the [PORT] is 5901.
For now you should be able to get the remote desktop via your NVC viewer WITHOUT password.
If you want to set a password for VNC, you MUST open a terminal IN the remote desktop that the VNC shows you and execute ./setPasswd.sh. Doing this via remote shell doesn't work.
./setPasswd.sh none to disable the VNC password, which allows you to get the remote desktop via your VNC viewer without password.
If you don't need autologin anymore, just do ./config_remote_desktop.sh noautologin.

ATTENTION:
Do NOT ssh via remote shell as root to do ./config_remote_desktop.sh, this can cause some permission issue.
Multi-remote-desktop is unachievable. The reason is that the remote desktop that you get is a real desktop, meaning that it is different from some others, such as vnc4server, which produces simulated desktops.

About config.sh

This script does several configurations:

Update the CA certificate. You must make sure that you have put the file ca_hXXXXi.crt into your local repository. As you can see in the .gitignore, this file isn't and shouldn't be pushed into the github repository. You can get it from the manager.
Configure your networking service. You can execute ./config.sh <network-interface> <last-octet-LAN-ip-address> to start your networking service. Before doing that, you can execute ifconfig -a to list all available network interfaces and can get your LAN ip address from the manager.
For example, ./config.sh eth0 10 will configure 172.19.48.10 using the eth0 to your LAN ip.
If you don't know which network interface you can use, you have to try one by one. To do so, you can execute ./config_ip_one_by_one.sh <last-octet-LAN-ip-address>.
Initialize your proxy configuration.
If you need only configure your proxy, just execute source initProxy.sh.
Configure the source of ROS1.
Change the source of apt to cn.
Create a user named mdc and add it to sudoers.

About recompile_git.sh

You may need this because git behind proxy under Ubuntu may cause some bug: https://askubuntu.com/questions/186847/error-gnutls-handshake-failed-when-connecting-to-https-servers/187199#187199
In this case, you need to apt remove git and ./recompile_git.sh.