Indradhanush Gupta indradhanush

Note: these instructions are for pre-Sierra MacOS. Sierra (10.12) and newer users see https://gist.github.com/gravitylow/fb595186ce6068537a6e9da6d8b5b96d by @gravitylow

If you are getting this in gdb on OSX while trying to run a program:

Operational PGP

This is a guide on how to email securely.

There are many guides on how to install and use PGP to encrypt email. This is not one of them. This is a guide on secure communication using email with PGP encryption. If you are not familiar with PGP, please read another guide first. If you are comfortable using PGP to encrypt and decrypt emails, this guide will raise your security to the next level.

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.

Once upon a time there was a user that wanted to install firefox.

The user tried to do pacman -S firefox but it didn't work. The all mighty pacman reported that firefox-3.2.4-1.i686.pkg.tar.gz could not be found on his mirror. So the user tried pacman -Sy firefox. It worked and the user rejoiced since he could once again go and troll /h/.

But all was not good. The user had made a grave error!

See, when the user told the almighty pacman to -Sy firefox, pacman did

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

	# i3 move a workspace to another monitor (multi monitor setup)
	mode "move_workspace" {
	bindsym Up move workspace to output up
	bindsym Down move workspace to output down
	bindsym Left move workspace to output left
	bindsym Up move workspace to output up

	bindsym Escape mode "default"
	}

	-- To use: telegram-cli -k tg-server.pub -s ohgodno.lua
	--
	-- Remember to watch for your telegram ID in telegram-cli, update it below.
	-- This script will let you message yourself, and will ignore messages from others.

	telegram_id = 1234567
	message_echo = ""

	function on_msg_receive (msg)
	if msg.to.id == telegram_id and msg.from.id == telegram_id and msg.text ~= message_echo then

	#!/bin/sh

	set -e
	# sudo for install may not be necessary, depending on permissions in /usr/local
	curl -L -O http://download.zeromq.org/zeromq-4.0.4.tar.gz
	tar -xzf zeromq-4.0.4.tar.gz

	cd zeromq-4.0.4

	./configure

	From 8ab91751069e391a95151c6716a546b1732ade92 Mon Sep 17 00:00:00 2001
	From: JP <twitter:canoeberry>
	Date: Sun, 19 Jan 2014 11:58:54 +0000
	Subject: [PATCH] partial memleak fix

	This patch was created by JP (twitter: @canoeberry) based on a memleak fix by Dirk (emacs committer) below:
	https://github.com/mirrors/emacs/commit/57ae6509a3b6a274f89b9caea0284c6156470625

	This memory leak is fixed in the trunk as of now and will be in the next official release: 24.4.

	$ brew install git
	zsh: correct 'git' to '.git' [nyae]? n
	Warning: A newer Command Line Tools release is available
	Update them from Software Update in the App Store.
	==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/git-1.8.4.2.mavericks.bottle.tar.gz
	Already downloaded: /Library/Caches/Homebrew/git-1.8.4.2.mavericks.bottle.tar.gz
	==> Pouring git-1.8.4.2.mavericks.bottle.tar.gz
	==> Caveats
	The OS X keychain credential helper has been installed to:
	/usr/local/bin/git-credential-osxkeychain