Bridge from Http proxy to Socks5 proxy using Privoxy

1.  Download Privoxy
2. Add the following 2 lines to the configuration file (config / config.txt)
`listen-address  127.0.0.1:8118
forward-socks5 / 127.0.0.1:1080 .`

(The first line is the address where http proxy server listens,
the second line is the socks5 server address)

Reinstall ubuntu 19.04 dual boot on T470p - Setting (1)

1.  Fix Windows and Linux Showing Different Times When Dual Booting
 To make linux use Local Time (not UTC time):
 `timedatectl set-local-rtc 1 --adjust-system-clock`

 To check your current settings, run:
`timedatectl`

 To undo this change:
 `timedatectl set-local-rtc 0 --adjust-system-clock`

 
@reference_1_ howtogeek.com


2. Add a (command) directory to the '$PATH' in Ubuntu

Edit `.bashrc` in your home directory and add the following line: 

`export PATH="/path/to/dir:$PATH"`

You will need to source your '.bashrc' or logout/login (or restart the terminal) for the changes to take effect. To source your '.bashrc', simply type 

`source ~/.bashrc`

@reference_2_askubuntu.com

3.  Install "proxychains"
 `apt-get install proxychains`

Edit:   `/etc/proxychains.conf`               (`chmod...` etc.)
Add:  `socks5 127.0.0.1 1080`

Note that: there is a DNS issue in "tsocks"

Use the following script to switch ports:
`re='^[0-9]{4}$'
if [ "$#" -eq  "0" ]
  then
    echo "Error: No arguments supplied"
else
    if ! [[ $1 =~ $re ]] ; then
       echo "Error: argument '$1' is illegal!"
    else sudo sed -i -r 's/(127.0.0.1 )([0-9]{4})/\1'"$1"'/g' /etc/proxychains.conf
    fi
fi`

@reference_3_yuzhangbit.github.io

4.  Add “New Document” back to the right-click menu
`touch ~/Templates/"Untitled Document"`

@reference_1_vitux.com

5. How to auto-mount windows 10 ntfs partition in dual-boot ubuntu system ?
    "Activities" --> search "Disks" --> select the partition to auto-mount -->
                click [gears icon] (Additional partition options) --> 
                click "Edit Mount Options..." --> 
                turn off "User Session Defaults" -->
                set "Mount Point" to `/media/xxxxx/D Volume` (or other pathes) -->
                click "OK" --> reboot system to check

Build a 'trojan' server

Step 1: 
(a). install nginx
(b). install letsencrypt as previously posted

Step 2:
(a). obtaining a Let's Encrypt SSL certificate
(b). set  'live' and 'archive' folder in 'letsencrypt' to 755 recursively

@ref_github_1

Step 3:
change nginx configuration as follws:
`

server {
    listen 127.0.0.1:80 default_server;

    server_name example.com;

    location / {

        proxy_redirect off; 
        proxy_pass https://www.xxxx.net;
    }

}

server {
    listen 127.0.0.1:80;

    server_name 100.100.100.100; # server IP address

    return 301 https://example.com;
}

server {
    listen 0.0.0.0:80;
    listen [::]:80;

    server_name _;

    return 301 https://example.com;
}

`
@ref_blog.siaimes.me_2

Step 4:
Option 1: Install 'trojan' from github:
@ref_trojan-gfw.github.io_3
(a).
run
 `sudo apt -y install build-essential cmake libboost-system-dev libboost-program-options-dev libssl-dev default-libmysqlclient-dev`
to install all the necessary dependencies.

(b).
`git clone https://github.com/trojan-gfw/trojan.git`
` cd trojan/`

(c).
`mkdir build`
`cd build/`
`cmake ..`
`make`
`ctest`
`make install`

(d).
edit '/usr/local/etc/trojan/config.json'
set "password"
set "cert": "/etc/letsencrypt/live/example.com/fullchain.pem"
set "key": "/etc/letsencrypt/live/example.com/privkey.pem"
set "alpn": [ "http/2.0" ]

(e).
`systemctl restart trojan nginx`
`systemctl status trojan nginx`
`systemctl enable trojan nginx`

Option 2: Install 'trojan' from 'apt repository'
(a).
`

apt install software-properties-common
add-apt-repository ppa:greaterfire/trojan
apt update

apt install trojan
trojan version
vi /etc/trojan/config.json

`
@ref_blog.siaimes.me_4

Step 5:
Firewall:
'

apt install ufw

ufw allow ssh     # Or port number

ufw allow https
ufw allow http
ufw enable
ufw status
ufw status verbose

'
@ref_blog.siaimes.me_5