Joel Lehtonen OH64K zouppen

Linux netconsole helper scripts

Allows remote logging via Linux netconsole. Contains helper scripts for both source (local) and sink (remote) systems using systemd.

Features:

Automatic detection of source interface and address
Automatic detection of target MAC address (or gateway address) to make logging unicast instead of Ethernet broadcast
Resolves hostnames to IP address at initialization time
Supports multiple instances using systemd @-notation.

This gist has been moved to a GitHub repo. Go there!

SSL certificate expiration checker

Useful for Icinga or other alert tool. Checks certificates from service, not file. This detects cases where certificate is renewed but not updated.

Public domain.

HTTPS

Telepulssi Oy TP-KN10

Display with 8 LED segment displays of size 5x7. Reverse engineered by kahvikello & Zouppen.

Slave board pinout:

Pin	Description	Atmega328 pin	Duemilanove/Uno pin
1	5V		5V
2	5V		5V

Skriptit Pupunettiä varten

Esimerkkiskriptit millä saadaan Pupunetin VPN soimaan.

Skripti tarvitaan siksi että vpnc:stä puuttuu uudelleenyhdistys.

Huom. Jos on tarvetta natata niin erityisen tärkeää on iptablesin OUTPUT-sääntö -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu, joka asettaa lähiverkosta tulevan MTU:n VPN:n MTU:ksi. Muuten yhteydet toimivat vähän huonosti. Lähde:

	#!/bin/sh -eu

	if test $# -ne 1; then
	echo Usage: $0 TAP_DEVICE >&2
	exit 2
	fi

	sidfile=`grep -slE "^iff:.$1$" /proc//fdinfo/* \| sed 's\|[^/]/[^/]$\|sessionid\|'`

	if test "$sidfile"; then

	From c49dd95565866ddb001af60c3145a0f6f16ac6ab Mon Sep 17 00:00:00 2001
	From: Joel Lehtonen <[email protected]>
	Date: Fri, 9 Mar 2018 15:32:15 +0200
	Subject: [PATCH] Use specific version of codec2 library

	---
	cmake/BuildCodec2.cmake \| 1 +
	1 file changed, 1 insertion(+)

	diff --git a/cmake/BuildCodec2.cmake b/cmake/BuildCodec2.cmake

	#!/bin/bash -eu

	fail () {
	echo
	echo "Paina enteriä palataksesi valikkoon."
	read
	}

	tmpfile=`mktemp`
	dialog --menu "Mitä tehdään?" 10 30 3 mosh "MObile SHell" ssh "Secure SHell" telnet "TELNET protocol" --inputbox "Anna käyttäjä@palvelin:" 8 40 2>$tmpfile

	// -- mode: c; c-file-style: "linux" --
	//
	// Monte Carlo estimate of pi optimized to use fixed-point arithmetics
	// instead of FPU. By [email protected]
	//
	// NB! I left error checks away for clarity. Never access files in
	// real life without checking return values!!
	//
	// Compile with `gcc --std=gnu99 -Wall -o montecarlo montecarlo.c`