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@bdha
bdha / vbox_to_kvm.txt
Created March 1, 2012 04:04
Migrating from VirtualBox to KVM on ZFS
# It's important to convert the vbox image (VMDK or VDI or whatever) using
# the same version of VirtualBox that created it. You can try converting the image
# with qemu-img or kvm-img, but weird version mismatches will possibly make it not
# work.
# On your VirtualBox machine:
cd $VBOX_ROOT/$MACHINE_ROOT/
VBoxManage clonehd machine.vmdk machine.img --format RAW
scp machine.img root@kvm-host:/somewhere
@pachacamac
pachacamac / mrisc.rb
Created July 7, 2011 10:20
A Simple Assembler Language and VM
#!/usr/bin/env ruby
class MRISC
def run(code)
tokens = code.gsub(/(\*.*?\*)|[^a-z0-9,-;@\._]/,'').split(';')
@vars,stack,i = {:_pc=>-1,:_oc=>0},[],0
tokens.map!{|t| t.chars.first=='@' ? (@vars[t.to_sym]=i-1;nil) : (i+=1;t.split(',').map{|e|numeric?(e) ? e.to_i : e.to_sym})}.compact!
while @vars[:_pc] < tokens.size-1
@vars[:_pc] += 1
@vars[:_oc] += 1
class PostsController < ActionController::Base
def create
Post.create(post_params)
end
def update
Post.find(params[:id]).update_attributes!(post_params)
end
private