shamil

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

thiago-vieira

class Class:
    pass

x = Class()
x.something = 42
print(x.something)  # 42

cdown

urlencode() {
    # urlencode <string>

    old_lc_collate=$LC_COLLATE
    LC_COLLATE=C

    local length="${#1}"
    for (( i = 0; i < length; i++ )); do
        local c="${1:$i:1}"
        case $c in

frogstarr78

require 'benchmark'
require 'Functional'

Benchmark.bmbm 30 do |bm|
  f = Functional.new
  bm.report( "define fib 1" ) { f.define( :fib, 1 ) { 1 } }
  bm.report( "define fib 2" ) { f.define( :fib, 2 ) { 1 } }
  bm.report( "define fib Fixnum" ) { f.define( :fib, Fixnum ) {|n| fib(n-1) + fib(n-2) } }

alainravet

# How to print the stacktrace from anywhere :

# 1° 
#------------------------------------------------------------------------------
module Kernel
  def print_stacktrace
    raise
  rescue
      puts $!.backtrace[1..-1].join("\n")
  end