maveonair

L1 cache reference                            0.5 ns
Branch mispredict                             5   ns
L2 cache reference                            7   ns             14x L1 cache
Mutex lock/unlock                            25   ns
Main memory reference                       100   ns             20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy              3,000   ns
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD               150,000   ns    0.15 ms
Read 1 MB sequentially from memory      250,000   ns    0.25 ms
Round trip within same datacenter       500,000   ns    0.5  ms

maveonair

#!/bin/sh
set -u
set -e
# Example init script, this can be used with nginx, too,
# since nginx and unicorn accept the same signals

# Feel free to change any of the following variables for your app:
APP_ROOT=/home/deploy/public_html/rm/current
PID=$APP_ROOT/tmp/pids/unicorn.pid
ENV=production

maveonair

final SimpleDateFormat formatter = SimpleDateFormat.getDateInstance(DateFormat.MEDIUM, Locale.US);
final String pattern = formatter.toLocalizedPattern();

maveonair

#!/bin/ksh

function proxy(){
   export http_proxy="http://localhost:8080/"
	 export https_proxy="http://localhost:8080/"
	 export ftp_proxy="http://localhost:8080/"
	 export no_proxy="localhost,127.0.0.1,localaddress"
	 echo -e "\nProxy environment variable set."
}
function proxyoff(){

maveonair

encrypt:

tar -cj directory | openssl des3 -salt > encrypted.tarfile

decrypt:

cat encrypted.tarfile | openssl des3 -d -salt |tar -xvj

maveonair

awk '{ if ( match($0, "^pattern") ) { printf "%s\n%s\n", $0, "new TEXT" } else { print } }' input_file.text

maveonair

lsof -i | grep LISTEN

maveonair

require 'dnssd'
require 'timeout'

begin
timeout 3 do
  DNSSD.browse! '_airvideoserver._tcp.', 'local' do |r|
    puts "Found HTTP service: #{r.name}"
  	
    resolver = DNSSD::Service.new
		resolver.resolve(r) do |resolved|

maveonair

num(1).
num(2).
num(3).

triple(X,Y,Z) :- X=\=Y,X=\=Z,Y=\=Z.
allnumbers(X,Y,Z) :- num(X),num(Y),num(Z).
ct(X,Y,Z) :- allnumbers(X,Y,Z), triple(X,Y,Z).

sudoko(A,B,C,D,E,F,G,H,I) :- ct(A,B,C),ct(D,E,F),ct(G,H,I),ct(A,D,G),ct(B,E,H),ct(C,F,I).

maveonair

33 * * * * wget 'http://update.zerigo.com/dynamic?host=example.zerigo.com&[email protected]&password=f7f9c95662ebc538' -O /dev/null