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@paulovittor23
paulovittor23 / gist:2871137
Created June 4, 2012 22:14
how to convert vmdk to vhd
VBoxManage clonehd /Users/paulo/VirtualBox\ VMs/devtools_1338568497/box-disk1.vmdk --format VHD ~/Desktop/cururu.vhd
@railwaycat
railwaycat / Emacs_starter.pl
Last active March 12, 2023 01:26
Start Emacs.app from CLI
#!/usr/bin/perl
# Emacs starter for Emacs mac port
# Thanks to Aquamacs Project and David Reitter
my $args = "";
my $tmpfiles = "";
for my $f (@ARGV) {
@woxtu
woxtu / gist:7156835
Last active February 10, 2016 22:17
Draw a triangle using GLSL and VBO in Rouge
;; Rouge 0.0.15
(require "glut")
(require "opengl")
(def vertex-shader "
attribute vec3 position;
attribute vec4 color;
varying vec4 vertex_color;
@winterz
winterz / setup-travis.sh
Last active May 25, 2017 01:10
travis CI setup script
#/bin/sh -f
# things to do for travis-ci in the before_install section
if ( test "`uname -s`" = "Darwin" )
then
#cmake v2.8.12 is installed on the Mac workers now
#brew update
#brew install cmake
echo
@Wack0
Wack0 / 1-torrents-time-certs-keys.md
Last active June 10, 2022 12:39
Torrents Time bundles certificates and private keys.

Torrents Time bundles certificates and private keys

So, with all the news about how Torrents Time is insecure.. I figured I might as well reverse it.

It seems to have three components, one (on windows) is a native service (TTService.exe) that runs as SYSTEM, another (TTPlayer.exe) runs under a lower privileged user. There's also a nodejs application, server.js.

The native service seems to set up a localhost HTTPd, on either port 12400, 11400, 10400 or 9400, using whichever is open.

So, I browsed to it, and was astonished to discover it was running with TLS, and gave the browser a valid certificate, signed by Thawte! (the cert was issued to localhost.ttconfig.xyz, obviously to work around new CA rules. For the record, it currently resolves to 127.0.0.1 as you'd probably expect.)

This is an outdated draft that was used to review the content with FreeBSD contributors. For the latest revision, vist http://shawndebnath.com/articles/2016/03/27/freebsd-jails-with-vlan-howto.html.


FreeBSD Jails with VLAN HOWTO

This article discusses how to set up jails on a FreeBSD 11-CURRENT system utilizing VIMAGE (aka VNET) to provide a virtualized independent network stack for each jail with support for VLAN tagging.

Prerequisites

B: Yeah, the doctor said it would never grow back, but I mean, I've got a good few inches there now.
L: Well it still tastes the same to me, so …
B: Yeah, I've not been able to notice the difference either.
B: Do you like coffee?
L: I love coffee.
B: Oh, you like coffee, do you?
L: Big fan.
B: Tsk — you, you're a bit of a fan of coffee?
L: Coffee fan!
B: Are you a fan of coffee?

@voutilad
voutilad / vmm-alpine.sh
Created May 29, 2017 15:16
Installing Alpine Linux in OpenBSD's VMM Hypervisor
# Assuming you're a regular user that has doas allowances for vmctl
mkdir -p ~/vmm
cd ~/vmm
# Grab the the one of the virt iso's of Alpine Linux
curl https://nl.alpinelinux.org/alpine/v3.6/releases/x86_64/alpine-virt-3.6.0-x86_64.iso -o alpine-virt-3.6.0-x86_64.iso
# Make a new virtual disk image, change the size as needed
vmctl create alpine-virt.img -s 6G

Foreward

This document was originally written several years ago. At the time I was working as an execution core verification engineer at Arm. The following points are coloured heavily by working in and around the execution cores of various processors. Apply a pinch of salt; points contain varying degrees of opinion.

It is still my opinion that RISC-V could be much better designed; though I will also say that if I was building a 32 or 64-bit CPU today I'd likely implement the architecture to benefit from the existing tooling.

Mostly based upon the RISC-V ISA spec v2.0. Some updates have been made for v2.2

Original Foreword: Some Opinion

The RISC-V ISA has pursued minimalism to a fault. There is a large emphasis on minimizing instruction count, normalizing encoding, etc. This pursuit of minimalism has resulted in false orthogonalities (such as reusing the same instruction for branches, calls and returns) and a requirement for superfluous instructions which impacts code density both in terms of size and

@ityonemo
ityonemo / nbody-zig.zig
Last active June 17, 2020 02:40
benchmarks game: zig
//! The Computer Language Benchmarks Game
//! https://salsa.debian.org/benchmarksgame-team/benchmarksgame/
//!
//! This implementation is written in simple and idiomatic Zig.
//! The only optimization is using SIMD vector intrinsics.
const std = @import("std");
/////////////////////////////////////////////////////////////////////////
// important constants. ALLCAPS constants are not idiomatic Zig, but it's