Installation of netsurf

Net-surf  is a lightweight browser with support of HTML4 and CSS2.1.
It is impossible to install net-surf from packages. So, the only way to use it on Ubuntu 18.04 is a compilation from sources. You need to download and extract the latest tar-ball from official web site .

I left here a short overview of the installation process.

Prepare your system:
sudo apt-get update
sudo apt-get upgrade

Install dependencies:
sudo apt-get install build-essential bison flex gperf libgtk2.0-dev libcurl4-openssl-dev libssl-dev libpng-dev libjpeg-dev libgtk2.0-dev

I have installed libcurl4-openssl-dev because I need in libcurl-dev which is shipping with packets:

1. libcurl4-openssl-dev 7.58.0-2ubuntu3.7
2. libcurl4-nss-dev 7.58.0-2ubuntu3.7
3. libcurl4-gnutls-dev 7.58.0-2ubuntu3.7

List of dependencies.

Now the system is ready for installation:
cd netsurf-all-3.8
make
sudo make install

The application will be installed as /bin/netsurf-gtk . To execute you need to run netsurf-gtk.

By default javascript is disabled

Подборка статей прочитанных в мае

Data Science && ML

Почему каждый Data Scientist должен знать Dask
Описание python библиотеки для работы с массивами большого объема. Главная особенность данные могут свопится на диске. Пригодится когда требуется работать с датасетом значительно большим чем объем имеющейся оперативной памяти.

Clouds

Облачные сервисы для игры на слабых ПК, актуальные в 2019 году

Terminal commands tips and tricks

Run the code in python or node.js

#: python -c "print 2+3"
#: nodejs -e "console.log(2+3)"

Launching a static web server in the current folder

#: python -m SimpleHTTPServer 8000

Work with the system clipboard

I use xsel utility to copy text in the system clipboard.
Copying the path of current folder with xsel:
#: pwd | xsel -b

To copy specific line and range of lines from a file:
#: sed -n '180p' file.txt | xsel -b
#: sed -n '180,182p' file.txt | xsel -b

Download collection of links

I use wget utility with i flag to download resources from the file one by one:
#: wget i <filepath>

Opening a image viewer from the console

#: gpicview <file path>
Where GPicView is a default image viewer in Lubuntu.

Terminal hot keys:

[Ctrl A] move to the beggining of the line

[Ctrl E] move to the end of the line

Sharing the internet connection in Ubuntu

My laptop is connected to wireless wifi and wired LAN networks. And I have internet connection on wifi network. So I wanted to share the internet from wifi connection to the computer connected to the laptop by LAN.
I have found some challange to do it on Ubuntu 18.04 so this is a reason why  I wanted to share my experience. I hope it will be usefull.

[Internet] <=> [wifi] <=[Laptop] => [lan] <=> [Wired network]

To open connections widget execute:

#: nm-connection-editor

My network interface in LAN network connected to 192.168.137.1

Lan connection settings

Wifi connection settings

Python virtual environment in Ubuntu

Installation in ubuntu 18.04

sudo apt-get install virtualenv

Installation in ubuntu 14.04

sudo apt-get install python-virtualenv

Examples

Create new virtual environment with python version 2.7
#: virtualenv venv
Activate virtual environment
#: source venv/bin/activate
or
#: source venv/Scripts/activate


Use command deactivate to deactivate environment.