tsyber1an

Moved to git repository: https://github.com/denji/golang-tls

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048

# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)

tsyber1an

package main

import (
	"context"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"

tsyber1an

How do POST file with curl??

You can post a json file with curl like so:

curl -X POST -H "Content-Type: application/json" -d @FILENAME DESTINATION

so for example:

tsyber1an

Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

tsyber1an

#!/bin/bash
###############################################
# To use: 
# https://raw.github.com/gist/2776351/???
# chmod 777 install_postgresql.sh
# ./install_postgresql.sh
###############################################
echo "*****************************************"
echo " Installing PostgreSQL"
echo "*****************************************"

tsyber1an

You'll need

• Raspberry Pi 3, 3+ or 2 (only)
• A Linux PC, laptop or Raspberry with SD card reader/slot
• A number of Raspberry Pis configured with Ethernet

You must have an SSH key, if you don't know what this is then type in ssh-keygen and follow the instructions.

Provision each Raspberry Pi:

tsyber1an

FILENAME=$(basename $(pwd))
go test -run=. -bench=. -cpuprofile=cpu.out -benchmem -memprofile=mem.out -trace trace.out
go tool pprof -pdf $FILENAME.test cpu.out > cpu.pdf && open cpu.pdf
go tool pprof -pdf --alloc_space $FILENAME.test mem.out > alloc_space.pdf && open alloc_space.pdf
go tool pprof -pdf --alloc_objects $FILENAME.test mem.out > alloc_objects.pdf && open alloc_objects.pdf
go tool pprof -pdf --inuse_space $FILENAME.test mem.out > inuse_space.pdf && open inuse_space.pdf
go tool pprof -pdf --inuse_objects $FILENAME.test mem.out > inuse_objects.pdf && open inuse_objects.pdf
go tool trace trace.out

go-torch $FILENAME.test cpu.out -f ${FILENAME}_cpu.svg && open ${FILENAME}_cpu.svg

tsyber1an

#!/bin/bash
#####################################################
# Name: Bash CheatSheet for Mac OSX
# 
# A little overlook of the Bash basics
#
# Usage:
#
# Author: J. Le Coupanec
# Date: 2014/11/04

tsyber1an

git config --global color.ui auto

git config --global core.editor vim

git config --global alias.st status
git config --global alias.br branch
git config --global alias.co checkout
git config --global alias.ci commit
git config --global alias.l 'log --color --graph --pretty=oneline --decorate --date=short --abbrev-commit --branches'
git config --global alias.ds 'diff --stat'

tsyber1an

package main

import (
	"crypto/tls"
	"crypto/x509"
	"flag"
	"io/ioutil"
	"log"
	"net/http"
)