ameenkhan07

What to Expect and Tips

• 45-minute systems interview, focus on responding to real world problems with an unhealthy service, such as a web server or database. The interview will start off at a high level troubleshooting a likely scenario, dig deeper to find the cause and some possible solutions for it. The goal is to probe your knowledge of systems at scale and under load, so keep in mind the challenges of the Facebook environment.
• Focus on things such as tooling, memory management and unix process lifecycle.

Systems

More specifically, linux troubleshooting and debugging. Understanding things like memory, io, cpu, shell, memory etc. would be pretty helpful. Knowing how to actually write a unix shell would also be a good idea. What tools might you use to debug something? On another note, this interview will likely push your boundaries of what you know (and how to implement it).

Design/Architecture 

Interview is all about taking an ambiguous question of how you might build a system and letting

davidbradway

Setup

Headless reinstall and update https://raspberrypi.stackexchange.com/a/57023

Enable SSH on the SD Card

• create a text file in /boot/ called ssh

Once you can SSH in:

LyleScott

"""
Lyle Scott, III  // lyle@ls3.io

Multiple ways to rotate a 2D point around the origin / a point.

Timer benchmark results @ https://gist.github.com/LyleScott/d17e9d314fbe6fc29767d8c5c029c362
"""
from __future__ import print_function

import math

hackjutsu

git branch --set-upstream-to <remote-branch>
# example
git branch --set-upstream-to origin feature-branch

# show up which remote branch a local branch is tracking
git branch -vv

sets the default remote branch for the current local branch.

larsblumberg

Flashing the memory card and creating /ssh file
===============================================

diskutil unmountDisk /dev/disk4
sudo dd bs=1m if=2017-01-11-raspbian-jessie-lite.img of=/dev/rdisk4
touch /Volumes/boot/ssh
diskutil unmountDisk /dev/disk4

SSH to Raspberry Pi
===================

chrishoffman

vault mount pki
vault mount -path=pki1 pki
vault mount -path=pki2 pki
vault mount -path=pki3 pki
vault mount-tune -max-lease-ttl=87600h pki
vault mount-tune -max-lease-ttl=87600h pki1
vault mount-tune -max-lease-ttl=87600h pki2
vault mount-tune -max-lease-ttl=87600h pki3
vault write pki/root/generate/internal common_name="Vault Testing Root Authority" ttl=87600h

mjambon

(*
   Interactive approach
   --------------------

   You can copy-paste code into `utop`, provided you load the lwt.unix
   package:

     #use "topfind";;
     #thread;;  (* only needed in the plain `ocaml` toplevel, not in `utop`. *)
     #require "lwt.unix";;

benjamintd

# coding: utf-8

# Imports

import os
import cPickle
import numpy as np
import theano
import theano.tensor as T

egorf

# ReachView code is placed under the GPL license.
# Written by Egor Fedorov (egor.fedorov@emlid.com)
# Copyright (c) 2015, Emlid Limited
# All rights reserved.

# If you are interested in using ReachView code as a part of a
# closed source project, please contact Emlid Limited (info@emlid.com).

# This file is part of ReachView.

lopspower

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

Download This sample on Google Play Store