Antony Cherepanov iamantony

Mounting VirtualBox shared folders on Ubuntu Server 18.04 LTS (Bionic Beaver)

This guide will walk you through the steps on how to setup a VirtualBox shared folder inside your Ubuntu Server guest.

Prerequisites

This guide assumes that you are using the following setup:

Oracle VM VirtualBox version 6.0.10 with Extension Pack installed
Microsoft Windows 7 SP1 as the host OS
A fresh install of Ubuntu Server 18.04.2 LTS as the guest OS

You could still make this guide work with other setups (possibly with some modifications to the commands and whatnot).

Notes on Apple’s Under-Documented LaunchD

Start triggers fire regardless of other conditions

For example, StartOnMount=true will cause the job to start when anything is mounted even if other conditions, e.g. QueueDirectories, say the job should not run

Rhythm of repeating jobs

The StartInterval timer begins ticking at the moment the plist is loaded. If something like QueueDirectories is preventing the job from

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

All github Emoji (Smiles)

ali.md/emoji

| 😄 | 😆 | 😊 | 😃 | ☺️ | 😏 | 😍 | 😘 | :kissing_face: | 😳 | 😌 | 😆 | 😁 | 😉 | :wink2: | 👅 | 😒 | 😅 | 😓

😩 | 😔 | 😞 | 😖 | 😨 | 😰 | 😣 | 😢 | 😭 | 😂 | 😲 | 😱 | | 😫 | 😠 | 😡 | 😤 | 😪 | 😋 | 😷

😎 | 😵 | 👿 | 😈 | 😐 | 😶 | 😇 | 👽 | 💛 | 💙 | 💜 | ❤️ | 💚 | 💔 | 💓 | 💗 | 💕 | 💞 | 💘 | ✨

	#!/usr/bin/python
	# -- coding: utf-8 --

	import pylzma, sys, os.path, zipfile, getopt, hashlib, datetime, time, struct, zlib

	__version__ = "0.02"
	stfu = False


	# VZ files follow similar yet more compact formatting to xz

	-480p - Run tenfoot in 480p rather than 1080p
	-720p - Run tenfoot in 720p rather than 1080p
	-accesscode -
	-all_languages - show longest loc string from any language
	-batterytestmode - rapidly cycle battery percentages for testing
	-bigpicture - Start in Steam Big Picture mode
	-blefw -
	-cafeapplaunch - Launch apps in a cyber cafe context
	-candidates - Show libjingle candidates for local connection as they are processed
	-ccsyntax - Spew details about the localized strings we load

	// Just before switching jobs:
	// Add one of these.
	// Preferably into the same commit where you do a large merge.
	//
	// This started as a tweet with a joke of "C++ pro-tip: #define private public",
	// and then it quickly escalated into more and more evil suggestions.
	// I've tried to capture interesting suggestions here.
	//
	// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
	// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

	before_install:
	- sudo add-apt-repository --yes ppa:ubuntu-sdk-team/ppa
	- sudo apt-get update -qq
	- sudo apt-get install -qq qt5-qmake qtbase5-dev qtdeclarative5-dev libqt5webkit5-dev libsqlite3-dev
	script:
	- qmake -qt=qt5 -v
	- qmake -qt=qt5
	- make

	import os
	from PIL import Image


	'''
	I searched high and low for solutions to the "extract animated GIF frames in Python"
	problem, and after much trial and error came up with the following solution based
	on several partial examples around the web (mostly Stack Overflow).

	There are two pitfalls that aren't often mentioned when dealing with animated GIFs -

	git branch -m old_branch new_branch # Rename branch locally
	git push origin :old_branch # Delete the old branch
	git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote