Sundar sundarv85

Common openssl commands

Create CSR

openssl req -nodes -newkey rsa:2048 -nodes -keyout privateKey.key -out CertRequest.csr -subj "/CN=mydomain.com"

Generate self-sign certificate

openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -keyout privateKey.key -out certificate.crt

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The GCC distributed with CentOS 6 is 4.4.7, which is pretty outdated.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.

Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

Purchase the cert

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

	package main

	import (
	"io"
	"log"
	"net"
	"time"
	)

	func reader(r io.Reader) {

	-- Insert in your rc.lua to globalkeys (may be after mod+x) defining
	-- In awesome 4.0 :
	awful.key({ modkey }, "c",
	function ()
	awful.prompt.run {
	prompt = "Calculate: ",
	textbox = awful.screen.focused().mypromptbox.widget,
	exe_callback = function (text)
	awful.spawn.easy_async(
	"python -c \"from math import * ; print(" .. text .. ")\"",

 # ag <https://github.com/ggreer/the_silver_searcher>
 # usage: ag-replace.sh [search] [replace]
 # caveats: will choke if either arguments contain a forward slash
 # notes: will back up changed files to *.bak files
 ag -0 -l $1 | xargs -0 perl -pi.bak -e "s/$1/$2/g"
 # or if you prefer sed's regex syntax:
 ag -0 -l $1 | xargs -0 sed -ri.bak -e "s/$1/$2/g"

	package main

	import (
	"log"
	"math"
	)

	func Round(val float64, roundOn float64, places int ) (newVal float64) {
	var round float64
	pow := math.Pow(10, float64(places))