FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
| After automatically updating Postgres to 9.6.1 via Homebrew, the pg_ctl start command didn't work. | |
| The error was something like "database files are incompatible with server". | |
| Database files have to be updated before starting the server, here are the steps that had to be followed: | |
| # need to have both 9.6.1 and latest 9.5.x installed, and keep 9.6.1 as default | |
| brew unlink postgresql | |
| brew install postgresql95 | |
| brew unlink postgresql95 | |
| brew link postgresql |
| import Html exposing (text) | |
| main = | |
| text <| toString <| cartesian ["a", "b", "c"] [1..5] | |
| cartesian : List a -> List b -> List (a,b) | |
| cartesian xs ys = | |
| List.concatMap | |
| ( \x -> List.map ( \y -> (x, y) ) ys ) | |
| xs |
| #!/bin/bash | |
| # --------------------------------------------------------- | |
| # Customizable Settings | |
| # --------------------------------------------------------- | |
| MOUNT_POINT="${CASE_SAFE_MOUNT_POINT:-${HOME}/casesafe}" | |
| VOLUME_PATH="${CASE_SAFE_VOLUME_PATH:-${HOME}/.casesafe.dmg.sparseimage}" | |
| VOLUME_NAME="${CASE_SAFE_VOLUME_NAME:-casesafe}" | |
| VOLUME_SIZE="${CASE_SAFE_VOLUME_SIZE:-60g}" |
| class Mind | |
| def initialize | |
| @random = Random.new | |
| generate_code | |
| end | |
| def play | |
| puts "Can you guess the code?\n\n" | |
| 10.times do |
| sysctl -w fs.file-max=12000500 | |
| sysctl -w fs.nr_open=20000500 | |
| ulimit -n 4000000 | |
| sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000' | |
| sysctl -w net.ipv4.tcp_rmem='1024 4096 16384' | |
| sysctl -w net.ipv4.tcp_wmem='1024 4096 16384' | |
| sysctl -w net.core.rmem_max=16384 | |
| sysctl -w net.core.wmem_max=16384 | |
| wget http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb | |
| sudo dpkg -i erlang-solutions_1.0_all.deb |
| m = mapnik.Map(1920, 1080) | |
| mapnik.load_map(m, 'style.xml') | |
| bbox = (-79, 35.5, -78.25, 36.25) | |
| prj = mapnik.Projection(m.srs) | |
| tileproj = GoogleProjection() | |
| render_tiles(bbox, "tiledir/", minZoom = 9, maxZoom = 9) |
| import mapnik | |
| from math import pi,cos,sin,log,exp,atan | |
| import sys, os | |
| DEG_TO_RAD = pi/180 | |
| RAD_TO_DEG = 180/pi | |
| def minmax (a,b,c): | |
| a = max(a,b) | |
| a = min(a,c) |
| #!/usr/bin/sudo sh | |
| ## ruby_revealer.sh -- decrypt obfuscated GHE .rb files. 2.0.0 to 2.3.1+. | |
| ## From `strings ruby_concealer.so`: | |
| ## | |
| ## > This obfuscation is intended to discourage GitHub Enterprise customers | |
| ## > from making modifications to the VM. | |
| ## | |
| ## Well, good, as long as its not intended to discourage *me* from doing this! |
| defmodule MyApp do | |
| use Application | |
| def start(_type, _args) do | |
| import Supervisor.Spec, warn: false | |
| children = [ | |
| Plug.Adapters.Cowboy.child_spec(:http, MyApp.Router, [], [ | |
| dispatch: dispatch | |
| ]) |
