oskar456’s gists

oskar456 / ipnetworks.py

Created August 30, 2012 07:03

GrepCIDR in Python

	#!/usr/bin/env python

	import ipaddr

	class IPNetworks():
	"""Represent a set of IP ranges.
	Support testing if an IP addres matches any prefix by simple
	networks = IPNetworks(['10.0.0.0/8','192.168.0.0/16'])
	'10.20.30.40' in networks #True
	"""

oskar456 / hanoi-iter.py

Last active March 15, 2018 04:18

Hanoi towers recursive and iterative solution

	#!/usr/bin/env python3
	# vim: ts=4 expandtab
	import sys

	class Peg:
	""" Stack representing one Hanoi peg. """
	def __init__(self, n=0):
	self.stack = []
	self.stack.extend(range(1,n+1))

oskar456 / ifcfg-eth0

Created May 2, 2013 14:27

OpenSUSE Policy Based Routing for IPv6

	BOOTPROTO='static'
	IPADDR='2001:718:1:fff0:50:56ff:feef:4/64'
	STARTMODE='onboot'
	NAME='VMXNET3 Ethernet Controller MGMT'

	PRE_UP_SCRIPT='local-disablera'
	POST_UP_SCRIPT='local-postup-pbr6'
	PRE_DOWN_SCRIPT='local-predown-pbr6'
	LOCAL_PBR6_PRIO='40001'
	LOCAL_PBR6_DEFAULTPRIO='60001'

oskar456 / ripe-db-demo-VM-in-KVM

Last active December 25, 2015 18:49

Run Sample RIPE DB virtual Appliance under QEMU on Gentoo Linux. Before first start, coverting VMDK to QCOW2 disk image is needed. To watch VM console, open VNC viewer to localhost:42

qemu-img convert -O qcow2 -o preallocation=off -p RIPEDB-disk1.vmdk RIPEDB-disk1.qcow2

oskar456 / prouting.sh

Last active June 14, 2023 22:19

A simple script to set up policy routing on linux. It's stateless and detects everything automatically, so all you have to do is to run it after every network subsystem change. I run it in postup and postdown hooks in Gentoo network configuration file.

	#!/bin/bash

	IP="/bin/ip"

	function prepare_rt_table() {
	local rttables=/etc/iproute2/rt_tables
	local iface=$1
	[[ "${iface}" = 'lo' ]] && return
	if ! egrep -q "\s${iface}\s*"\$ $rttables; then
	idx=$(wc -l <$rttables)

oskar456 / kmlbbox.py

Created May 9, 2014 19:49

KML bounding box

	#!/usr/bin/env python3

	import lxml.etree
	tree = lxml.etree.parse('pl.kml')
	root = tree.getroot()
	ns= 'http://earth.google.com/kml/2.1'
	pmarks = tree.findall('//{{{0}}}Placemark'.format(ns))
	for pmark in pmarks:
	coor= pmark.find('{{{0}}}Point/{{{0}}}coordinates'.format(ns))
	long, lat, alt = (float(x) for x in coor.text.split(',',3))

oskar456 / icecast.cgi

Created June 14, 2014 16:25

MPEG TS to IceCast CGI script

	#!/usr/bin/env python

	import subprocess
	import shlex
	import sys
	import signal

	sys.stdout.write("""Content-Type: audio/mpeg\r
	icy-br:192\r
	ice-audio-info: ice-samplerate=48000;ice-bitrate=192;ice-channels=2\r

oskar456 / emailer.py

Last active October 31, 2016 15:10

LinuxDays e-mailer

	#!/usr/bin/env python3

	import email.mime.text
	import email.utils
	import email.header
	import smtplib
	import copy
	import sys
	import re
	import argparse

oskar456 / czalloc.sh

Last active August 29, 2015 14:10

Czech IP allocations from RIPE NCC

	#!/bin/bash

	allocurl="ftp://ftp.ripe.net/pub/stats/ripencc/membership/alloclist.txt"
	#The workdir have to exist and be empty! It's content will be deleted after each run.
	workdir="/var/tmp/czalloc"

	function alloc2lir() {
	local dstdir="$1"
	local lirfile=""
	while read line; do

oskar456 / findword.py

Last active August 29, 2015 14:19

Find a word that consists of certian letters in dictionary (a.k.a. 4 Pics 1 Word helper)

	#!/usr/bin/env python3

	import argparse
	import collections
	import re

	parser = argparse.ArgumentParser(
	description='Find a word consisting of certain letters in dictionary'
	)
	parser.add_argument('letters',

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