sideshowbarker

This can reduce files to ~15% of their size (2.3M to 345K, in one case) with no obvious degradation of quality.

ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

Other options for PDFSETTINGS:

/screen selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
/ebook selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
/printer selects output similar to the Acrobat Distiller "Print Optimized" setting.
/prepress selects output similar to Acrobat Distiller "Prepress Optimized" setting.

HTML Style Guide

All rules and guidelines in this document apply to HTML files.

The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

Icon Legend:

· Space, ⇥ Tab, ↵ Enter/Return

How to set up multiple accounts with Mutt E-mail Client

Thanks to this article by Christoph Berg

Instructions

Directories and files

~/

A simple Ghostscript command to merge two PDFs in a single file is shown below:

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combine.pdf -dBATCH 1.pdf 2.pdf

Install Ghostscript:

Type the command sudo apt-get install ghostscript to download and install the ghostscript package and all of the packages it depends on.

Auto-deploying built products to gh-pages with GitHub Actions

This is a set up for projects which want to check in only their source files, but have their gh-pages branch automatically updated with some compiled output every time they push.

A file below this one contains the steps for doing this with Travis CI. However, these days I recommend GitHub Actions, for the following reasons:

It is much easier and requires less steps, because you are already authenticated with GitHub, so you don't need to share secret keys across services like you do when coordinate Travis CI and GitHub.
It is free, with no quotas.
Anecdotally, builds are much faster with GitHub Actions than with Travis CI, especially in terms of time spent waiting for a builder.

	#!/usr/bin/env ruby
	require 'rubygems'
	require 'hpricot'
	require 'gollum'

	wiki = Gollum::Wiki.new('openaustralia.wiki')

	file = File.open("OpenAustralia-20110309232515.xml", "r")

	doc = Hpricot(file)

	# Originally from http://sharebear.co.uk/blog/2009/09/17/very-simple-python-caching-proxy/
	#
	# Usage:
	# A call to http://localhost:80000/example.com/foo.html will cache the file
	# at http://example.com/foo.html on disc and not redownload it again.
	# To clear the cache simply do a `rm *.cached`. To stop the server simply
	# send SIGINT (Ctrl-C). It does not handle any headers or post data.

	import BaseHTTPServer
	import hashlib

	/**
	* Verifies that a HTML content is valid.
	* @param htmlContent the HTML content
	* @return true if it is valid, false otherwise
	* @throws Exception
	*/
	public boolean validateHtml( String htmlContent ) throws Exception {

	InputStream in = new ByteArrayInputStream( htmlContent.getBytes( "UTF-8" ));
	ByteArrayOutputStream out = new ByteArrayOutputStream();

	* {
	font-size: 12pt;
	font-family: monospace;
	font-weight: normal;
	font-style: normal;
	text-decoration: none;
	color: black;
	cursor: default;
	}