Phil Kauffman papamoose

References:

Overview

Priority values

From man page: man apt_preferences

Introspecting a file on ZFS

Derived from: http://www.c0t0d0s0.org/archives/7485-Find-out-in-depth-information-about-a-file-in-ZFS.html

Sometimes you need to acquire in-depth information about a file that isn't exposed by other commands like stat.

ZFS allows you to do this with zdb. However there's a confusing problem. If you're just trying to access a file on your root pool that doesn't have any nested datasets, you need use rpool/ instead of just rpool (assuming "rpool" is the name of your root pool).

Here's 3 examples of acquiring information on /filepath.

Howto start using Letsencrypt with `simp_le`

What I had:

A Debian server at "mydomain.fi"
A self-signed certificate for Apache HTTPD, Postfix SMTPD and Dovecot IMAPD.

What I wanted:

A Letsencrypt certificate for Apache, Postfix and Dovecot
Simple tool for managing certificates that does need root privileges
Automatic renewal

Binding and Unbinding to Active Directory from Mac OS via Command Line

Open the Terminal Application
Type in sudo -i and type in your Mac Administrator account password. sudo gives you root level or administrator level privileges.

To View current Active Directory Settings

dsconfigad -show

To Unbind a Computer from an Active Directory Domain

Git

Global Settings

Related Setup: https://gist.github.com/hofmannsven/6814278
Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
Interactive Beginners Tutorial: http://try.github.io/
Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Reminder

Press minus + shift + s and return to chop/fold long lines!

	#!/bin/bash
	# Script Name: check_updates_deb
	# Author Name: Matt McKinnon
	# Date: 7th June 2016
	# Description: For use on Debian Based Systems
	# This script will:
	# Clean up the local apt repository of retrieved packages (apt-get clean)
	# Resync the package index (apt-get update)
	# If called with AUTOUPDATE set to yes then updates will be downloaded and applied with no feed back (not recommended)
	# If called without AUTOUPDATE then packages are downloaded and an email is sent informing which packages are to be updated.

	Use this as an example on how to start the virtual console without the need of Java Web Start or accessing it from the web interface.
	You can use the user and password that you use for the web interface.

	You need an old JRE... I used 1.7.0_80 from the Server JRE package, also I have tested successfully 1.7.0_79 with MacOS.
	You don't need to install it, just extract it or copy the files in "jre" folder.

	Open the viewer.jnlp file that you get by launching the virtual console from the web interface with a text editor.
	Note the urls to the jar files. Download the main jar file avctKVM.jar and the libs for your operating system and architecture.
	Extract the dlls (.so Linux, .jnilib MacOS) from the jar libs.

	import os

	descriptors = list()

	def getString():
	test_file = "nvidia-smi -q --gpu=0 \| tail -23"

	try:
	p = os.popen(test_file, 'r')
	return p.read()

	#!/bin/bash

	# See http://apple.stackexchange.com/questions/107307/how-can-i-install-the-command-line-tools-completely-from-the-command-line

	echo "Checking Xcode CLI tools"
	# Only run if the tools are not installed yet
	# To check that try to print the SDK path
	xcode-select -p &> /dev/null
	if [ $? -ne 0 ]; then
	echo "Xcode CLI tools not found. Installing them..."

	users:
	- { username: user1, password: password }
	- { username: user2, password: password }
	- { username: user3, password: password }
	- { username: user4, password: password }