jennings

sort

Sorts on a column.

$ sort makes.txt
1 volkswagen
2 honda
3 ford

jennings

Fundamental Principle

Systems in general work poorly or not at all.

First Principles

1. New Systems mean new problems.
2. The total amount of anergy in the universe is fixed.
3. Systems tend to expand to fill the known universe.

jennings

Download PuTTY

Download and install the latest 64-bit PuTTY. Using the MSI is fine.

Generate an SSH key

Each computer should a unique SSH key. The same key can be reused for GitHub, Bitbucket, and any other Git server you connect to.

1. Launch PuTTYgen:
2. Select "Ed25519"

jennings

function Caffeinate {
    param([scriptblock]$ScriptBlock)
    $active_scheme_id = (powercfg /GetActiveScheme).Split(" ")[3]
    $high_perf_id = "8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c"

    powercfg /s $high_perf_id
    if ($LASTEXITCODE -ne 0) { return }
    try {
        & $ScriptBlock
    } finally {

jennings

Creation

System.Reactive	rxjs 6
Observable.Return	import { of } from "rxjs"
Observable.Empty	import { EMPTY } from "rxjs"
Observable.Never	import { NEVER } from "rxjs"
Observable.Throw	import { throwError } from "rxjs"
Observable.Create	new Observable(observer => {})
Observable.Range	import { range } from "rxjs"

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$ErrorActionPreference = "Stop"

function Main {
    "This script creates a zip file that contains all files changed between two commits."
    "Commits can be specified as commit IDs (SHA) or as branch names."
    "For example: 'master' or 'ff39683ed6'"
    ""

    $git_dir = Read-Host -Prompt "Git directory"
    $to_commit = Read-Host -Prompt "Commit to deploy"

jennings

These are copied from this article by Nate McMaster. I've been Googling for it every time I needed it, so I decided it would be a good idea to save these templates somewhere, in case the article ever goes away.

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const MODULE_BODIES = {

    // This is the body of the file foo/index.ts, wrapped in a function
    ["./foo/index.ts"]: function (module) {
        const file = __webpack_resolve__("./foo/file.ts")
        module.exports.Service = file.Service
    },
    
    // This is the body of the file foo/file.ts, wrapped in a function
    ["./foo/file.ts"]: function (module) {

jennings

Write the base image to the SD card

mkfs.vfat on Arch comes from dosfstools (source)

Basic setup

SOME KIND OF PACMAN INIT (https://archlinuxarm.org/forum/viewtopic.php?t=12796)

pacman-key --init

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#define NONEST

void Main()
{
    Database.SetInitializer<MyContext>(null);
    using (var db = new MyContext())
    {
        var date = "20180315";
        var query = from row in db.Tabl1
                    where SqlFunctions.DateDiff(