H@di hadisfr

VirtualBox Host-Only Static IP

My typical setup for a development box in VirtualBox uses two NICs. The first uses NAT to allow the box to communicate with the outside world through my host computer’s network connection. (NAT is the default, so shouldn't require any setup.) The second is a "host-only" connection that allows my host and guest to interact.

To create a host-only connection in VirtualBox, start by opening the preferences in VirtualBox. Go to the "Network" tab, and addd a Host-only Network. Modify the host-only network, and disable DHCP. Make a note of the IP address. (Feel free to set the IP address as well, if you like.)

Next, assign this host-only adapter to the virtual machine. Select the VM and press "Settings". Go to the "Network" tab, and select "Adpater 2". Enable the adapter, set it to a "Host-only Adapter", and select the adpater you created above.

NAT Troubleshooting

How to setup an Outline VPN Server on Ubuntu 16.04 Server

This guide will show you how to install Outline Server on an Ubuntu 16.04 Server and use Outline Manager.

Install Outline Manager

Outline Manager supports Windows, macOS and Linux.

Outline Manager for Windows

Run a Shadowsocks Proxy Server on Ubuntu

Install Shadowsocks

It's possible to install ss-server by apt:

apt-get install shadowsocks-libev

Varnish Cache

Varnish is an HTTP accelerator and a useful tool for speeding up a server, especially during a times when there is high traffic to a site. It works by redirecting visitors to static pages whenever possible and only drawing on the virtual private server itself if there is a need for an active process.

How to Install

Download and build

Latest varnish version: 4.1.3

	#!/usr/bin/env bash

	# PDF Stamper Scrtipt
	#
	# Author: H@di ([email protected])
	#
	# pdftk in.pdf multistamp stamp.pdf output out.pdf
	# https://www.pdflabs.com/docs/how-to-add-headers-footers-watermarks-and-stamps-to-pdf/
	#

	#!/usr/bin/env bash

	for f in `find . -name "*.srt"`; do
	iconv -f ms-arab -t utf8 $f > ${f%".srt"}.u.srt
	echo -e ${f%".srt"}.u.srt
	done

	# ~/.bash_profile

	alias ls='ls --color=auto'
	alias grep="grep --color=auto"
	alias diffstat="diffstat -C"

	alias hiddneFilesShow='defaults write com.apple.finder AppleShowAllFiles YES && rm ~/.DS_Store; killall Finder /System/Library/CoreServices/Finder.app'
	alias hiddneFilesHide='defaults write com.apple.finder AppleShowAllFiles NO && rm ~/.DS_Store; killall Finder /System/Library/CoreServices/Finder.app'

	function aria2webui(){

	#!/usr/bin/bash

	# Agnoster BASH Theme
	#
	# Author: H@di([email protected])
	#
	# Usage: 1. set a powerline-compatible font for terminal
	# 2. append this file to your ~/.bash_profile
	#
	# • powerline-compatible fonts: https://github.com/powerline/fonts/tree/master/SourceCodePro

	#!/usr/bin/env bash

	# a script to compile and run linux kernel using qemu and gdb
	#
	# author: hadi_sfr([email protected])
	#
	# Usage:
	# Download .tar.gz kernel file from https://www.kernel.org/pub/linux/kernel/
	# Put .tar.gz file besdie this script
	# Run the script

	// ============================================================================
	// Copyright (c) 2012 by Terasic Technologies Inc.
	// ============================================================================

	// Permission:

	// Terasic grants permission to use and modify this code for use
	// in synthesis for all Terasic Development Boards and Altera Development
	// Kits made by Terasic. Other use of this code, including the selling
	// ,duplication, or modification of any portion is strictly prohibited.