IQAndreas’s gists

IQAndreas / .bashrc

Last active August 29, 2015 14:02

Displays the status of the previous command run from the terminal. Place somewhere inside of your `.bashrc` file. Result: http://i.stack.imgur.com/r7YwR.png

	# Shows the exit value of the last executed command
	function previous_command_status()
	{
	local exit_code=$?;
	case "$exit_code" in
	0) printf "\033[1;4;32m%-${COLUMNS}s\033[00m" "Command successful";;
	126) printf "\033[1;4;31m%-${COLUMNS}s\033[00m" "Permission problem or command is not an executable";;
	127) printf "\033[1;4;31m%-${COLUMNS}s\033[00m" "Command not found";;
	130) printf "\033[1;4;31m%-${COLUMNS}s\033[00m" "Script canceled";;
	*) printf "\033[1;4;31m%-${COLUMNS}s\033[00m" "Command failed with exit code $exit_code";;

IQAndreas / look-and-say.js

Created August 11, 2014 11:39

The "Look and Say Sequence" in JavaScript. See: https://www.youtube.com/watch?v=ea7lJkEhytA

	function lookAndSay(num) {
	var look = /(1+\|2+\|3+)/g;
	function say(match, position) {
	return match.length.toString() + match.substring(0, 1);
	}

	return num.toString().replace(look, say);
	}

IQAndreas / look-and-see-ugly.js

Created August 11, 2014 12:25

The "Look and Say Sequence" as if it were written by a regular JavaScript developer.

	function lookAndSay(num) {
	// TODO: Needs more JQuery
	return num.toString().replace(/(1+\|2+\|3+)/g, function(match) { return match.length.toString() + match.substring(0, 1); });
	}

IQAndreas / caesar-cipher.sh

Last active July 22, 2025 22:46

A really simple Caesar Cipher in Bash (or Shell) using `tr`, can also easily be adjusted to encrypt/decrypt ROT13 instead.

	# Caesar cipher encoding
	echo "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG" \| tr '[A-Z]' '[X-ZA-W]'
	# output: QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD

	# Caesar cipher decoding
	echo "QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD" \| tr '[X-ZA-W]' '[A-Z]'
	# output: THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG


	# Can also be adjusted to ROT13 instead

IQAndreas / get-console-encoding.py

Last active August 29, 2015 14:05

Get the encoding of the console the script is currently running in (plus a few other lines for debugging)

	#!/usr/bin/env python3
	import sys, locale;
	print(sys.stdout.encoding);
	print(locale.getpreferredencoding());

	# http://www.macfreek.nl/memory/Encoding_of_Python_stdout#StreamWriter_Wrapper_around_Stdout
	if sys.stdout.encoding != 'UTF-8':
	sys.stdout = codecs.getwriter('utf-8')(sys.stdout.buffer, 'strict')
	if sys.stderr.encoding != 'UTF-8':
	sys.stderr = codecs.getwriter('utf-8')(sys.stderr.buffer, 'strict')

IQAndreas / gist:0a8c4994d68649ba231f

Created August 19, 2014 02:27

`switch(true)` abuse. This is a neat trick, but should obviously never actually be done. See http://stackoverflow.com/q/25373912/617937

	switch (true)
	{
	case (!isset($_GET['action']):
	require('menu.html');
	break;
	case ($_GET['action'] == 'debug'):
	require('core/actions/debug.php');
	break;
	case ($_GET['action'] == 'submit'):
	require('core/actions/submit.php');

IQAndreas / static-redeclare.php

Created August 21, 2014 14:17

Unable to create a PHP function with the same name as a static function. Results in the error message listed below. See: http://stackoverflow.com/q/25428887/617937

	<pre><?php

	class Module
	{
	// ---- Static methods ----

	private static $config = array();
	public static function get_config($module_name, $field)
	{
	if (!isset(Module::$config[$module_name]))

IQAndreas / gist:08cd95ac2c497bdeda56

Created November 28, 2014 04:12

How to flip a 2x3 matrix

	[ a b ]
	[ c d ]
	[ e f ]

	[ e c a ]
	(╯°□°)╯︵ [ f d b ]

IQAndreas / exit.coffee

Created December 16, 2014 00:53

Hubot script to help the user if they tried to exit the chat room using the wrong command.

	// Alerts the user if they typed one of the following (with our without a preceeding backslash)
	// exit
	// quit
	module.exports = (robot) ->
	robot.respond /([^:]+): \\?(exit\|quit)/i, (msg) ->
	user = msg.match[1]
	msg.send("#{user}: Try /exit")

IQAndreas / not-a-shell.coffee

Created December 16, 2014 00:57

Hubot script which yells at users who try to treat [`ssh-chat`](https://github.com/shazow/ssh-chat) as if it were a shell

	// Yells at users for thinking this is an SSH shell
	// Responds to the following commands (case sensitive, obviously):
	// ls
	// rm
	// cat
	module.exports = (robot) ->
	robot.respond /([^:]+): (ls\|rm\|cat)/, (msg) ->
	user = msg.match[1]
	msg.send("Damn it, #{user}. This is a chat room, not a shell!")

Andreas Renberg IQAndreas