souhaiebtar

Serial console for KVM based VM and IPMI serial channel

grub and kernel console

Set in /etc/default/grub:

...
###GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0,115200n8 console=tty1"
GRUB_CMDLINE_LINUX=""

How to setup a practically free CDN

I've been using [Backblaze][bbz] for a while now as my online backup service. I have used a few others in the past. None were particularly satisfactory until Backblaze came along.

It was - still is - keenly priced at a flat $5 (£4) per month for unlimited backup (I've currently got just under half a terabyte backed-up). It has a fast, reliable client. The company itself is [transparent about their operations][trans] and [generous with their knowledge sharing][blog]. To me, this says they understand their customers well. I've never had reliability problems and everything about the outfit exudes a sense of simple, quick, solid quality. The service has even saved the day on a couple of occasions where I've lost files.

Safe to say, I'm a happy customer. If you're not already using Backblaze, [I highly recommend you do][recommend].

Taking on the big boys with B2

Install Golang 1.17.3 on Debian / Raspberry Pi

rm -rf /usr/local/go

GOVERSION="1.17.6"

wget "https://golang.org/dl/go${GOVERSION}.linux-amd64.tar.gz" -4
tar -C /usr/local -xvf "go${GOVERSION}.linux-amd64.tar.gz"

This is a fork of original gist https://gist.github.com/nrollr/3f57fc15ded7dddddcc4e82fe137b58e, with slight changes on pointing to 5.7 version branch, instead of 8 (latest default of MySQL in Hombrew).

Install MySQL 5.7 on macOS

This procedure explains how to install MySQL using Homebrew on macOS (Sierra 10.12 and up)

Install Homebrew

Installing Homebrew is effortless, open Terminal and enter :
$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Note: Homebrew will download and install Command Line Tools for Xcode 8.0 as part of the installation process.

Update 7/28/2019: An updated version of this guide for Ubuntu Server 18.04 LTS is now available. Feel free to check it out.

Mounting VirtualBox shared folders on Ubuntu Server 16.04 LTS

This guide will walk you through steps on how to setup a VirtualBox shared folder inside your Ubuntu Server guest. Tested on Ubuntu Server 16.04.3 LTS (Xenial Xerus)

Steps:

Open VirtualBox
Right-click your VM, then click Settings
Go to Shared Folders section

	#!/bin/bash

	set -o errexit
	set -o nounset
	set -o pipefail

	target="${1:-/opt/sublime_merge/sublime_merge}"

	check_sha() {
	local sha_valid

	#!/bin/bash
	## Install Golang 1.17.4 64Bits on Linux (Debian\|Ubuntu\|OpenSUSE\|CentOS)
	## http://www.linuxpro.com.br/2015/06/golang-aula-1-instalacao-da-linguagem-no-linux.html
	## Run as root (sudo su)
	## Thank's @geosoft1 \| @gwmoura


	GO_URL="https://storage.googleapis.com/golang"
	GO_VERSION=${1:-"1.17.4"}
	GO_FILE="go$GO_VERSION.linux-amd64.tar.gz"

	using namespace System.Management.Automation
	using namespace System.Management.Automation.Language

	if ($host.Name -eq 'ConsoleHost')
	{
	Import-Module PSReadLine
	}
	#Import-Module PSColors
	#Import-Module posh-git
	Import-Module -Name Terminal-Icons

	# Backup
	docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

	# CREATE DATABASE
	docker exec container mysql -uroot -proot -e "CREATE DATABASE DATABASE"

	# Restore
	cat backup.sql \| docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE