steve ulrich sulrich

Real-world networking datasets

Please comment below if you have an update, e.g., with another networking-related dataset.

Dataset repos or tools

Finding datasets: New Google Dataset search
Mendeley Data: https://data.mendeley.com/datasets
Kaggle Data: https://www.kaggle.com/datasets
Google's M-Lab networking performance data sets: https://www.measurementlab.net/data/

My Vim-related gists

Long-form

security and hardening options for systemd service units

A common and reliable pattern in service unit files is thus:

NoNewPrivileges=yes
PrivateTmp=yes
PrivateDevices=yes
DevicePolicy=closed
ProtectSystem=strict

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

"Scar Tissues Make Relationships Wear Out"

04/26/2103. From a lecture by Professor John Ousterhout at Stanford, class CS142.

This is my most touchy-feely thought for the weekend. Here’s the basic idea: It’s really hard to build relationships that last for a long time. If you haven’t discovered this, you will discover this sooner or later. And it's hard both for personal relationships and for business relationships. And to me, it's pretty amazing that two people can stay married for 25 years without killing each other.

[Laughter]

> But honestly, most professional relationships don't last anywhere near that long. The best bands always seem to break up after 2 or 3 years. And business partnerships fall apart, and there's all these problems in these relationships that just don't last. So, why is that? Well, in my view, it’s relationships don't fail because there some single catastrophic event to destroy them, although often there is a single catastrophic event around the the end of the relation

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)


	#cd into directory in Finder's front window
	function cdf() {
	finderPath=`osascript -e 'try
	tell application "Finder" to set the source_folder to (folder of the front window) as alias
	on error
	tell application "Finder" to set source_folder to insertion location as alias
	end try
	return POSIX path of source_folder as string'`
	cd "$finderPath"

	#!/bin/sh

	basename=`basename $0`

	if [ -z "$*" ]; then
	echo "usage: ${basename} <dot> [ -o \| -r \| <file> \| - ]"
	echo ""
	echo "options:"
	echo " -o open dot in window with keyboard focus"
	echo " -r read contents of dot"

	Mute these words in your settings here: https://twitter.com/settings/muted_keywords

	ActivityTweet
	generic_activity_highlights
	generic_activity_momentsbreaking
	RankedOrganicTweet
	suggest_activity
	suggest_activity_feed
	suggest_activity_highlights
	suggest_activity_tweet

	Do

	You may try the following but may not succeed:
	git config --local --unset credential.helper
	git config --global --unset credential.helper
	git config --system --unset credential.helper

	On Mac, the configuration is stored in:
	/Library/Developer/CommandLineTools/usr/share/git-core/gitconfig