appden

# put this in your bash profile (change the line below if you use .bash_profile)

# refresh profile on USR1 signal
trap 'eval $(PATH= /usr/libexec/path_helper -s) && source ~/.profile' USR1

# send USR1 signal to all bash instances
reload() {
	ps -xo pid,command | grep ' \-bash' | awk '{print $1}' | while read pid; do
		kill -USR1 $pid
	done

jboner

Latency Comparison Numbers (~2012)
----------------------------------
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        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

gagarine

<?php
/**
 * Theme_menu_tree doesn't provide any context information
 * THIS SUCKS
 * But you can use hook_block_view_alter to change the theme wrapper
 * OUF!
 */


function MYTHEME_menu_tree(&$variables) {

thinkerbot

#!/usr/bin/expect -f
#############################################################################
#
# Arguments passed on the command line end up as a list of escaped strings.
# Hence you can eval them to get the literal values properly entered into
# an expect command.
#
#   ./expect_argv '---&;`'\''"|*?~<>^()[]{}$\---'
#   ---&;`'"|*?~<>^()[]{}$\---
#

crazybyte

NOTE: HTTP SSL keys are all in PEM format (base64 encoded)

#From PEM format to DER
openssl x509 -in $1.crt -out $1.der -outform DER
#From DER format to PEM
openssl x509 -in $1.der -inform DER -out $1.pem -outform PEM

#Transforming RSA key to DER format
openssl rsa -in oberon.key -inform PEM -out oberon_key.der -outform DER

toolmantim

# A simple Makefile alternative to using Grunt for your static asset compilation
#
## Usage
#
#   $ npm install
#
# And then you can run various commands:
#
#   $ make            # compile files that need compiling
#   $ make clean all  # remove target files and recompile from scratch

michaelklapper

MY_BASH_BLUE="\033[0;34m" #Blue
MY_BASH_NOCOLOR="\033[0m"
HISTTIMEFORMAT=`echo -e ${MY_BASH_BLUE}[%F %T] $MY_BASH_NOCOLOR `
HISTSIZE=20000
HISTFILESIZE=20000

MichaelEvans

module Jekyll

  class GooglePlusEmbedTag < Liquid::Tag
    @post = nil
    @height = ''
    @width = ''

    def initialize(tag_name, markup, tokens)
      if markup =~ /(https:\/\/plus.google.com\/\d+\/posts\/\w+)/i
        @url  = $1

stephenturner

Installing gcc 4.8 and Linuxbrew on CentOS 6

The GCC distributed with CentOS 6 is 4.4.7, which is pretty outdated. I'd like to use gcc 4.8+. Also, when trying to install Linuxbrew you run into a dependency loop where Homebrew's gcc depends on zlib, which depends on gcc. Here's how I solved the problem.

Note: Requires sudo privileges.

Resources:

• http://superuser.com/a/676337/88393: Forum response on using CERN's open Scientific Linux distribution of RHEL's developer toolset.
• http://linux.web.cern.ch/linux/devtoolset/: CERN's developer toolset installation instructions.