githubutilities

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

GUI Concept

http://askubuntu.com/questions/411147/what-is-the-relationship-between-unity-gnome-gnome-3-compiz-metacity-and-li

Determine display manager

cat /etc/X11/default-display-manager

Swappiness

# The default swappiness in Ubuntu 60. Reducing the default value of swappiness will probably improve overall performance for a typical Ubuntu desktop installation. A value of swappiness=10 is recommended, but feel free to experiment.
# Checkout swappiness value
cat /proc/sys/vm/swappiness

# Switch swap off
sudo swapoff -a

Change default shell

Editing /etc/passwd won't work in iOS, so in order to change default shell in iOS you need to edit /etc/master.passwd. You can change root's default shell to bash like this -- root:/smx7MYTQIi2M:0:0::0:0:System Administrator:/var/root:/bin/bash.

Reference

SSH into iPhone using private key

1. in Client shell

# Generate rsa key
ssh-keygen -b 2048
#or using
ssh-keygen -t rsa

SPF Records

Sender Policy Framework (SPF) is an email validation system designed to prevent spam by detecting email spoofing.

# get spf record domain from google
dig TXT +short google.com

# get spf record from google
dig @8.8.8.8 TXT +short _spf.google.com

Use Jailbreak iPhone as DNS Server

1. Install `dnsmasq`

# install "dnsmasq" package from `ModMyi`
apt-get install uk.org.thekelleys.dnsmasq

2. Edit your `/etc/resolv.conf`

Getting started with Theos

Theos setup guide

`ldid` in ubuntu

git clone https://github.com/daeken/ldid.git
cd ./ldid

Things to do after jailbreak

Applications

Activator
iFile
SmartTap - awake screen with double tap on the screen

	#! /usr/bin/env bash

	cd "$(dirname "${BASH_SOURCE}")";

	# Ask sudo upfront
	sudo -v

	# Install and configure the necessary dependencies
	sudo apt-get install --yes curl openssh-server ca-certificates postfix
	# Add the GitLab package server and install the package