ruskotron’s gists

ruskotron / LinkedSet.java

Created February 3, 2017 17:07

	public class LinkedSet<Row> {

	/* "Empty" list, is first and last with null values - first & last are same */
	private Node first = null;
	private Node last = null;

	private Map<Row, Node> index = new HashMap<Row, Node>();

	/* Linked-list node */
	private final class Node {

ruskotron / remedian-mat.java

Last active November 16, 2016 10:46

Java style pseudocode for the remedian algorithm

	/* Remedian algorithm rework to use matrices rather than discrete arrays

	"""The program of Figure 2 can be easily adapted to produce
	the remedian curve, by replacing the arrays A l , A2,
	A3, and A4 of length 11 by matrices with 11 rows and T
	columns. In this way the total storage becomes 44T, whereas
	the plain median would have needed 14,641T positions"""

	*/

ruskotron / bgbuild.sh

Created September 11, 2015 15:17

Run a build in the background ; write output to faster local 'scratch' ; on exit copy output into local dir

$ nohup bash -c "(. env.sh ; make all > /tmp/build.log.${!} 2>&1 ; mv /tmp/build.log.${!} .)" &

ruskotron / .screenrc

Last active August 29, 2015 14:22

	# Tips from https://www.mattcutts.com/blog/a-quick-tutorial-on-screen/

	# Use Ctrl-Z instead of Ctrl-A for escape
	#escape ^Zz

	# "You'll get scrolling like you're used to (with your wheely mouse)"
	termcapinfo xterm\|xterms\|xs\|rxvt ti@:te@

	# you will get a bottom bar indicating name of machine you're on, a clock, and indicators in which shell you currently are.
	# Use CTRL-A SHIFT-A to rename your shells. The names will then also appear in the bottom bar

ruskotron / start_vm.sh

Last active August 29, 2015 14:22

Start a Vagrant VM without having to use "vagrant up" (which can potentially destroy your VM if it prior "vagrant halt" didn't work properly)

	#!/usr/bin/bash
	#

	VM_NAME=$1

	SSH_PORT=$(VBoxManage showvminfo ${VM_NAME} --machinereadable \| awk -F, '/^Forwarding$[0-9]+$="/ && $NF == "22\"" { print $(NF-2) ; exit}')

	echo "SSH PORT: $SSH_PORT"

	VBoxManage.exe list runningvms \| grep -q "^\"$VM_NAME\" " \|\| (

ruskotron / key_decode.py

Created January 14, 2015 09:13

Decode MS-MPPE-Send-Key / MS-MPPE-Recv-Key



	from hashlib import md5
	from binascii import unhexlify, hexlify

	seq_xor = lambda c, b: ''.join(
	chr(x) for x in map(lambda X: ord(X[0]) ^ ord(X[1]), zip(c, b))
	)

	#

ruskotron / Interrupts.java

Created August 13, 2014 11:32


	interface Resource {

	void monopolise() throws InterruptedException;
	}

	public class Interrupts implements Runnable {

	private final MyResources myRes;

ruskotron / my_bash_profile.sh

Last active January 25, 2016 09:24

My .bash_profile


	#
	# rrusk 2015-11-25 Universal bash profile
	# 2015-12-21 Added Colour Output for Ant
	# 2016-01-25 ignore CVS and .svn autocomplete

	# notify version
	echo hello 8.2

	#

ruskotron / my_epoch

Last active December 21, 2015 09:09

So imagine you have an arbitrary time system in place, where you define time as a number of minutes from a particular date (beginning of your "epoch"), or days from that particular date. If you ever needed to convert such dates to a sensible format, commands such as these could be useful to you. Just add to your environment (e.g. ".bashrc") e.g.…

	# set base of 'my' epoch (here it's the start of the 21st century)
	export MY_EPOCH=$(expr $(date --date="2000/01/01 00:00:00" +%s))

	# format date and time, as expressed in minutes from start of 'my' epoch
	function strftime_my {
	date --date="@$(expr $MY_EPOCH + $ $1 \* 60 $ )"
	}

	# format date, as expressed in days from start of 'my' epoch
	function strfdate_my {

ruskotron / mycmd.cmd

Last active December 18, 2015 04:59

Windows command-shell initialisation - if you're used to developing under linux and you want to enjoy some of the same command-line luxuries under windows unfortunately there's nothing you can do to get command-line history beyond your current seesion :-(

	rem lines starting with "rem" are commented out similar to '#' in unix-land

	rem so you want to have a useful windows command-line?
	rem put this file in some standard location like "C:\myscripts"
	rem then right-click, "New > Shortcut" and enter the following for location:
	rem C:\Windows\System32\cmd.exe /K "C:\myscripts\mycmd.cmd"
	rem give it a name you like and then 'finish'
	rem then right-click on the shortcut, go to "Properties" and set "Start in:" to be your "Home Directory"

	rem I've tried to explain some of the peculiarities of windows "batch-file" and "doskey" scripting below ...