Vadim Gusev vadimii

Beginners Ubuntu

A Beginners Guide To Things To Do After Installing Ubuntu.

1. Check For Updates

sudo apt update && sudo apt upgrade

2. Enable additional repositories for more software

Ubuntu has several repositories from where it provides software for your system. Enabling all these repositories will give you access to more software and proprietary drivers.

Mute volume

osascript -e "set volume with output muted"

Unmute volume

osascript -e "set volume without output muted"

Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

Creating an Ubuntu Core Series 16 image

On VMWare fusion, running an Ubuntu Xenial VM, which has a copy of your OS X public SSH key -- the script to build the image will add it to the generated image -- grab the script at https://github.com/zyga/devtools/blob/master/ubuntu-image to create a new image:

./ubuntu-image.sh --developer-mode pc

Convert .img to .vmdk

qemu-img convert pc-devel.img -O vmdk snappy.vmdk

pyvenv-3.3 (Ubuntu 13.10, also Debian)

Symptoms

pyvenv-3.3 venvdir
venvdir/bin/python -c 'import sys; print(sys.path)'
# This should print the venvdir in sys.path.

But in buggy Ubuntu/Debian, it doesn't.

	// Refrence from: https://gist.github.com/beevelop/a0f2c76e79610dca01550c9a93f83876
	// Copy following scripts in the developer console of page included markdown content you want to print:

	(function () {
	var $ = document.querySelector.bind(document);
	$('#readme').setAttribute('style', 'position:absolute;top:0;left:0;right:0;bottom:0;z-index:100;background-color:white');
	$('#readme>article').setAttribute('style', 'border: none');
	$('body').innerHTML = $('#readme').outerHTML;
	window.print();
	})();

	#!/bin/bash
	tmp=$(mktemp -d)
	pushd "$tmp"

	iso=/Users/lloeki/Downloads/archlinux-2015.08.01-dual.iso
	echo "fixing disk"
	dd if=/dev/zero bs=2k count=1 of=tmp.iso
	dd if=$iso bs=2k skip=1 >> tmp.iso

	echo "mounting disk"

	#!/bin/sh

	set -e
	set -x

	for package in $(npm -g outdated --parseable --depth=0 \| cut -d: -f3)
	do
	npm -g install "$package"
	done

	#!/usr/bin/env bash
	# Install missing Linux From Scratch Host System Requirements for Ubuntu 14.04

	if [ ! $(whoami) == "root" ]; then
	echo "Please run as root!"
	exit 1
	fi

	# symlink sh to bash
	ln -fsv /bin/bash /bin/sh