MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

hofmannsven

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!

marktheunissen

This playbook has been removed as it is now very outdated.

JPvRiel

References:

• Ubuntu Community Wiki - PinningHowto
• Debian Wiki - AptPreferences

Overview

Priority values

From man page: man apt_preferences

xbb

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.

robinsmidsrod

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

bzerangue

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

mokagio

#!/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..."

comprofix

#!/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.

kbarber

Renew Puppet CA cert.

Not the perfect idea, but should alleviate the need to resign every cert.

What you need from existing puppet ssl directory:
ca/ca_crt.pem
ca/ca_key.pem

Create an openssl.cnf:
[ca]