somera

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

Typing vagrant from the command line will display a list of all available commands.

Be sure that you are in the same directory as the Vagrantfile when running these commands!

Creating a VM

vagrant init -- Initialize Vagrant with a Vagrantfile and ./.vagrant directory, using no specified base image. Before you can do vagrant up, you'll need to specify a base image in the Vagrantfile.
vagrant init <boxpath> -- Initialize Vagrant with a specific box. To find a box, go to the public Vagrant box catalog. When you find one you like, just replace it's name with boxpath. For example, vagrant init ubuntu/trusty64.

Starting a VM

vagrant up -- starts vagrant environment (also provisions only on the FIRST vagrant up)

Ideas for improvements to `git log --graph`

I will maybe someday get around to dusting off my C and making these changes myself unless someone else does it first.

Make the graph for `--topo-order` less wiggly

Imagine a long-running development branch periodically merges from master. The git log --graph --all --topo-order is not as simple as it could be, as of git version 1.7.10.4.

It doesn't seem like a big deal in this example, but when you're trying to follow the history trails in ASCII and you've got several different branches displayed at once, it gets difficult quickly.

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	server:
	###########################################################################
	# BASIC SETTINGS
	###########################################################################
	# Time to live maximum for RRsets and messages in the cache. If the maximum
	# kicks in, responses to clients still get decrementing TTLs based on the
	# original (larger) values. When the internal TTL expires, the cache item
	# has expired. Can be set lower to force the resolver to query for data
	# often, and not trust (very large) TTL values.
	cache-max-ttl: 86400

	#! /bin/bash

	# ECHO COMMAND
	# echo Hello World!

	# VARIABLES
	# Uppercase by convention
	# Letters, numbers, underscores
	NAME="Bob"
	# echo "My name is $NAME"

	#!/bin/bash
	# Referenced and tweaked from http://stackoverflow.com/questions/6174220/parse-url-in-shell-script#6174447

	proto="$(echo $1 \| grep :// \| sed -e's,^\(.://\).,\1,g')"
	# remove the protocol
	url="$(echo ${1/$proto/})"
	# extract the user (if any)
	userpass="$(echo $url \| grep @ \| cut -d@ -f1)"
	pass="$(echo $userpass \| grep : \| cut -d: -f2)"
	if [ -n "$pass" ]; then

	# List all possible power config GUIDs in Windows
	# Run: this-script.ps1 \| Out-File powercfg.ps1
	# Then edit and run powercfg.ps1
	# (c) Pekka "raspi" Järvinen 2017

	$powerSettingTable = Get-WmiObject -Namespace root\cimv2\power -Class Win32_PowerSetting
	$powerSettingInSubgroubTable = Get-WmiObject -Namespace root\cimv2\power -Class Win32_PowerSettingInSubgroup

	Get-WmiObject -Namespace root\cimv2\power -Class Win32_PowerSettingCapabilities \| ForEach-Object {
	$tmp = $_.ManagedElement

	# Got a bunch of .ckpt files to convert?
	# Here's a handy script to take care of all that for you!
	# Original .ckpt files are not touched!
	# Make sure you have enough disk space! You are going to DOUBLE the size of your models folder!
	#
	# First, run:
	# pip install torch torchsde==0.2.5 safetensors==0.2.5
	#
	# Place this file in the SAME DIRECTORY as all of your .ckpt files, open a command prompt for that folder, and run:
	# python convert_to_safe.py