leahcim

## TL;DR

# Simulate purging all kernels apart from the two most recent ones:
dpkg-query -Wf'${binary:Package}\n' 'linux*-3.*.*-*' | sort -t. -k2 | head -n-8 | xargs apt-get -s purge

# Purge all kernels apart from the two most recent ones:
dpkg-query -Wf'${binary:Package}\n' 'linux*-3.*.*-*' | sort -t. -k2 | head -n-8 | xargs sudo apt-get -y purge


## Explanation

leahcim

#!/bin/bash
# 9th July 2014

lang() {
  lang=
  if [ -f "$1" ]; then

    # keep reading until $line non empty
    # ':' means "Do Nothing"
    while read line && [ -z "$line" ]; do :; done < "$1"

leahcim

#!/bin/bash
# 11th July 2014

UNITY="C:\Program Files\Unity\Editor\Unity.exe"
LOG="Library/ImportedPackages.txt"

usage() {
cat << EOF
A simple launcher and batch package importer for the Unity Editor
Download the editor from: http://unity3d.com

leahcim

#!/bin/bash

for file in "$@"; do
  TEMP=temp.$RANDOM

  sed "s/\s*$//" "$file" |   # Trim whitespace from ends of lines
  cat -s                 |   # Collapse consecutive blank lines into one
  tr  "\n" "\0"          |   # Replace new line characters with nulls
  sed "s/\x0*$//"        |   # Trim nulls from the end
  tr  "\0" "\n" > "$TEMP"    # Replace nulls with new line characters

leahcim

Here's an example of how to embed a Gist on GitHub Pages:

{% gist 5555251 %}

All you need to do is copy and paste the Gist's ID from the URL (here 5555251), and add it to a gist tag surrounded by {% and %}.

leahcim

#! /bin/sh
set -e

# Save the $timeout and $timeout_style values set by /etc/grub.d/00_header
# before /etc/grub.d/30_os-prober messes them up.

cat << EOF
set timeout_bak=\${timeout}
set timeout_style_bak=\${timeout_style}
EOF