xero

IRC Reference

Not intended as a guide for newbies, more like a "cheat sheet" for the somewhat experienced IRC user, especially one who wields some power over a channel.

The Basics

• /join #channel
  • Joins the specified channel.
• /part #channel
• Leaves the specified channel.

lornajane

Keyboard-only Mac Cheatsheet

Hi, I'm Lorna and I don't use a mouse. I have had RSI issues since a bad workstation setup at work in 2006. I've tried a number of extra hardware modifications but what works best for me is to use the keyboard and only the keyboard, so I'm in a good position and never reaching for anything else (except my coffee cup!). I rather unwisely took a job which required me to use a mac (I've been a linux user until now and also had the ability to choose my tools carefully) so here is my cheatsheet of the apps, tricks and keyboard shortcuts I'm using, mostly for my own reference. Since keyboard-only use is also great for productivity, you may also find some of these ideas useful, in which case at least something good has come of this :)

Apps List

There's more detail on a few of these apps but here is a quick overview of the tools I've installed and found helpful

Tool	Link	Comments

henrik

Install ImageMagick for image conversion:

brew install imagemagick

Install tesseract for OCR:

brew install tesseract --all-languages

Or install without --all-languages and install them manually as needed.

zudsniper

Certainly! Obsidian is a popular note-taking application that supports Markdown with LaTeX integration for mathematical notation. When using LaTeX in Obsidian's Markdown flavor, you typically enclose the LaTeX code within double dollar signs $$...$$ for block math and single dollar signs $...$ for inline math.

Here's an exhaustive list of the symbols for propositional logic and their formulas specifically formatted for Obsidian flavor Markdown:

1. Conjunction (AND)

   • Symbol: ∧
   • Obsidian Markdown: $\land$ or $\wedge$

2. Disjunction (OR)

• Symbol: ∨

isaacs

echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh

jfloff

First of all you need to be able to run MAMP in port 80. This is a "heat check" if you don't have any process jamming http ports. You can check it like this:

sudo lsof | grep LISTEN

If you do happen to have any process with something like this *:http (LISTEN), you are in trouble. Before with adventure check if it isn't MAMP itself (yeah, you should close that beforehand)

ps <pid of that process>

If you don't see MAMP, you are in good hands, I have just the thing for you:

mrkgnao

#!/usr/bin/env bash

set -euo pipefail
origdir=$(pwd)
tmpdir=$(mktemp -d)
echo "tmpdir: $tmpdir"
read -r width height < <(pdfinfo $1 | grep "Page size:" | sed 's/[a-zA-Z: ]*\([0-9]\+\)[x ]*\([0-9]\+\).*/\1 \2/')
npages=$(pdfinfo $1 | grep "Pages:" | sed 's/Pages: \+\([0-9]\+\).*/\1/')
echo "page count: $npages"
echo "(width, height) = ($width, $height)"

reissbaker

Window Controls

• ⌘ ← 0x02 0x70
• ⌘ → 0x02 0x6E

Pane Controls

• ⌘ ⌥ ↑ 0x02 0x1B 0x5B 0x41

jasonm23

Handy one-liners for sed

Mar. 23, 2001 - version 5.1 - compiled by Eric Pement pemente@northpark.edu

Latest version of this file is usually at:

• http://www.student.northpark.edu/pemente/sed/sed1line.txt

• http://www.cornerstonemag.com/sed/sed1line.txt

• This file is also available in Portuguese at:

marsam

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Pdfcrop
=======

Based on pdfcrop.pl_. Uses the BoundingBox [#]_

Dependencies:
  - PyPDF2_