imam-san

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

How to Install GO Lang on CentOS / Amazon Linux?

sudo wget https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz
tar -xzf go1.4.2.linux-amd64.tar.gz 
export GOROOT=PATH_WHERE_YOU_EXTRACT_GO
export PATH=$PATH:$GOROOT/bin 
export GOBIN=$GOROOT/bin 
mkdir ~/golang/ 
export GOPATH=~/golang/

How to Install GO Lang on CentOS / Amazon Linux?

sudo wget https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz
tar -xzf go1.4.2.linux-amd64.tar.gz 
export GOROOT=PATH_WHERE_YOU_EXTRACT_GO
export PATH=$PATH:$GOROOT/bin 
export GOBIN=$GOROOT/bin 
mkdir ~/golang/ 
export GOPATH=~/golang/


	int Hexascii(unsigned char dest, unsigned char src, int size)
	{
	int i;

	if (size > 0)
	{
	for (i = 0; i < (size / 2); i++)
	{
	(dest + (2 i)) = ((*(src + i) &0xF0) >> 4) + 0x30;

	import 'dart:convert';

	int covertToAmt(var l){
	var amt = 0;
	for (int i = 0, j=l.length-1; i < l.length; i++, j--) {
	amt+=((l[j]<<(i*8)));
	}
	return amt;
	}

	#!/bin/bash

	lsof -a -p $1 -d cwd -n \| tail -1 \| awk '{print $NF}'