tsyber1an

curl -iH "Host: delaymaster.local" http://127.0.0.1\?delay\=70s

returns

HTTP/1.1 504 Gateway Time-out
Server: nginx/1.14.1
Date: Mon, 12 Nov 2018 21:03:37 GMT

tsyber1an

{
    "editor.wordWrap": "bounded",
    "editor.wordWrapColumn": 160,
    "editor.fontSize": 14,
    "workbench.editor.enablePreview": false,
    "workbench.editor.enablePreviewFromQuickOpen": false,
    "editor.smoothScrolling": true,
    "editor.minimap.enabled": false,
    "editor.rulers": [
        80,

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

Google Spanner

• v0.30.0
  • DML support added. See https://godoc.org/cloud.google.com/go/spanner#hdr-DML_and_Partitioned_DML for more information. (commit)
• v0.29.0
  • Add a metric for the number of sessions currently opened. (commit)
• v0.27.0
  • Fix a case where an iterator might not be closed correctly. (nothing)
• v0.24.0
• Support struct-typed parameter bindings. (commit)

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

func (logger Logger) Print(values ...interface{}) {
	if len(values) > 1 {
		level := values[0]
		currentTime := "\n\033[33m[" + NowFunc().Format("2006-01-02 15:04:05") + "]\033[0m"
		source := fmt.Sprintf("\033[35m(%v)\033[0m", values[1])
		messages := []interface{}{source, currentTime}

		if level == "sql" {
			// duration
			messages = append(messages, fmt.Sprintf(" \033[36;1m[%.2fms]\033[0m ", float64(values[2].(time.Duration).Nanoseconds()/1e4)/100.0))