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@isaacs
isaacs / node-and-npm-in-30-seconds.sh
Last active July 21, 2024 01:20
Use one of these techniques to install node and npm without having to sudo. Discussed in more detail at http://joyeur.com/2010/12/10/installing-node-and-npm/ Note: npm >=0.3 is *safer* when using sudo.
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh
@un33k
un33k / sed cheatsheet
Created August 22, 2011 13:28
magic of sed -- find and replace "text" in a string or a file
FILE SPACING:
# double space a file
sed G
# double space a file which already has blank lines in it. Output file
# should contain no more than one blank line between lines of text.
sed '/^$/d;G'
@kurtmilam
kurtmilam / deep_extend_javascript_objects_underscore_mixin.js
Last active October 3, 2020 14:56
Deep Extend / Merge Javascript Objects - underscore.js Mixin
/* Copyright (C) 2012-2014 Kurt Milam - http://xioup.com | Source: https://gist.github.com/1868955
*
* This mixin now has its own github repository: https://github.com/kurtmilam/underscoreDeepExtend
* It's also available through npm and bower
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFR
@jboner
jboner / latency.txt
Last active July 25, 2024 11:30
Latency Numbers Every Programmer Should Know
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
@mikhailov
mikhailov / 0. nginx_setup.sh
Last active June 29, 2024 23:43
NGINX+SPDY with Unicorn. True Zero-Downtime unless migrations. Best practices.
# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies.
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
#
# Deployment structure
#
# SERVER:
# /etc/init.d/nginx (1. nginx)
# /home/app/public_html/app_production/current (Capistrano directory)
#
@matthewlehner
matthewlehner / autopgsqlbackup
Created July 11, 2012 16:10
Auto PostgreSQL backup script.
#!/bin/bash
#
# PostgreSQL Backup Script Ver 1.0
# http://autopgsqlbackup.frozenpc.net
# Copyright (c) 2005 Aaron Axelsen <axelseaa@amadmax.com>
#
# This script is based of the AutoMySQLBackup Script Ver 2.2
# It can be found at http://sourceforge.net/projects/automysqlbackup/
#
# The PostgreSQL changes are based on a patch agaisnt AutoMySQLBackup 1.9
@iros
iros / API.md
Created August 22, 2012 14:42
Documenting your REST API

Title

<Additional information about your API call. Try to use verbs that match both request type (fetching vs modifying) and plurality (one vs multiple).>

  • URL

    <The URL Structure (path only, no root url)>

  • Method:

@leommoore
leommoore / dns_basics.md
Last active January 30, 2021 03:34
DNS Basics

#DNS Basics Domain names are a core feature of the internet. It is simply a mechanism to give a friendly name to remove the need to use ip addresses directly. It also has a number of advantages, such as:

  1. It allows you to have more than one domain name pointing at the same ip address (ie same website).
  2. It allows you to host more than one website on a specific ip address (ie shared hosting, the website shown in the one associated with the domain name)
Record Type
@dopiaza
dopiaza / slackpost
Created September 5, 2013 12:33
Post a message to a Slack channel
#!/bin/bash
# Usage: slackpost <token> <channel> <message>
# Enter the name of your slack host here - the thing that appears in your URL:
# https://slackhost.slack.com/
slackhost=PUT_YOUR_HOST_HERE
token=$1
@agrueneberg
agrueneberg / client.html
Last active March 19, 2023 06:48
HMAC-SHA256 example for verifying both the data integrity and the authentication of a request in Node.js and web browsers.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>HMAC-SHA256 Example</title>
</head>
<body>
<script src="http://crypto.stanford.edu/sjcl/sjcl.js"></script>
<script>
var sharedSecret, query, signature, hmac, xhr;