TooTallNate

var data;
process.stdin.on('data', function(chunk) {
  data = chunk
});
process.stdin.on('end', function() {
  console.log(data);
  var givenCrc = data.slice(data.length-2);
  givenCrc = (data[1] << 7 | data[0]);
  console.log(givenCrc);

robinsmidsrod

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

orlp

int64_t ipow(int64_t base, uint8_t exp) {
    static const uint8_t highest_bit_set[] = {
        0, 1, 2, 2, 3, 3, 3, 3,
        4, 4, 4, 4, 4, 4, 4, 4,
        5, 5, 5, 5, 5, 5, 5, 5,
        5, 5, 5, 5, 5, 5, 5, 5,
        6, 6, 6, 6, 6, 6, 6, 6,
        6, 6, 6, 6, 6, 6, 6, 6,
        6, 6, 6, 6, 6, 6, 6, 6,
        6, 6, 6, 6, 6, 6, 6, 255, // anything past 63 is a guaranteed overflow with base > 1

max-mapper

note: I converted this script into the much easier to install joinopenwifi module on NPM

see https://github.com/maxogden/joinopenwifi#joinopenwifi for installation instructions

john-clark

#!ipxe
# 
# This file gets compiled into undionly.kpxe
################################################################
:vars
set next-server 192.168.2.121
cpuid --ext 29 && set arch amd64 || set arch x86
:netconfig
dhcp net0 || goto ipxeshell
:prompt

raelgc

Setup a Local Only SMTP Email Server (Linux, Unix, Mac)

1 - Point localhost.com to your machine

Most of programs will not accept an email using just @localhost as domain. So, edit /etc/hosts file to make the domain localhost.com point to your machine, including this content to the file:

127.0.0.1 localhost.com

2 - Install Postfix

artizirk

#!/bin/ash

#using: sendsms +375555555 "some text i want to send"

TELFNUMB=$1
SMSTEXT=$2
MODEM="/dev/ttyUSB1"

#reg to the network (maybe not needed)
gcom reg -d $MODEM

schickling

require "active_record"

namespace :db do

  db_config       = YAML::load(File.open('config/database.yml'))
  db_config_admin = db_config.merge({'database' => 'postgres', 'schema_search_path' => 'public'})

  desc "Create the database"
  task :create do
    ActiveRecord::Base.establish_connection(db_config_admin)

gitaarik

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of usecases of submodules:

• Separate big codebases into multiple repositories.

payne92

# If Windows getch() available, use that.  If not, use a
# Unix version.
try:
    import msvcrt
    getch = msvcrt.getch
except:
    import sys, tty, termios
    def _unix_getch():
        """Get a single character from stdin, Unix version"""