yalla’s gists

yalla / transproxy.sh

Created June 17, 2011 19:32 — forked from katmagic/transproxy.sh

Transparently proxy all connections (and DNS requests) through Tor.

	#!/bin/sh
	### BEGIN INIT INFO
	# Provides: transproxy
	# Required-Start: $network tor
	# Required-Stop: $network
	# Default-Start: 2 3 4 5
	# Default-Stop: 0 1 6
	# Short-Description: Transparently proxy all network traffic through Tor.
	### END INIT INFO

yalla / cpu_stress.sh

Created August 9, 2011 12:29

Small CPU load testing script which uses openssl and is kinda bulletproof on Linux.

	#!/bin/bash

	NUMCPUS=`grep -c processor /proc/cpuinfo`

	if [ -z "$1" ] ; then
	NUMINSTANCES=2
	else
	echo $1 \| grep "^[0-9]*$" >/dev/null
	if [ "$?" -ne 0 ] ; then
	echo Argument $1 is not a number. Aborting.

yalla / HOST-RESOURCE-MIB-CPUs.pl

Created August 11, 2011 12:00

Generic HOST-RESOURCES-MIB::hrProcessorLoad Cacti script - gives all CPU-load in a single call. Needs data-, data-input-methode- and graph-tepmplates.

	#!/usr/bin/perl

	use Net::SNMP;

	# base_oid ist HOST-RESOURCES-MIB::hrProcessorLoad
	my $base_oid = ".1.3.6.1.2.1.25.3.3.1.2";

	($session, $error) = Net::SNMP->session(
	-hostname => "$ARGV[0]",
	-version => "2",

yalla / NETWORK-SERVICES-MIB.pl

Created August 11, 2011 14:26

Get connection statistics from NETWORK-SERVICES-MIB for Cacti

	#!/usr/bin/perl

	use Net::SNMP;

	($session, $error) = Net::SNMP->session(
	-hostname => "$ARGV[0]",
	-version => "2",
	-community => "public",
	);

yalla / gist:1175283

Created August 27, 2011 11:38

Basic memory caching for CGI-scripts in Apache2

	# Load modules
	LoadModule cache_module modules/mod_cache.so
	LoadModule mem_cache_module modules/mod_mem_cache.so
	# Enable caching for only this script
	CacheEnable mem /cgi-bin/bla/myscript
	# Ignore the user's request for non-cached content
	CacheIgnoreCacheControl On
	# Ignore the fact that the cgi-script doesn't give the last modified header
	CacheIgnoreNoLastMod On
	# Cache for 5 seconds

yalla / gist:1176565

Created August 28, 2011 11:34

Save and restore iptables rules

	#!/bin/bash

	case "$1" in
	start)
	iptables-save > /tmp/firewall-rules.backup

	for i in nat filter mangle; do
	iptables -t $i -F
	done
	# TODO: Add your Tor-rules here

yalla / gist:1185769

Created September 1, 2011 09:13

How Cisco stacking became a pain in the ass (although it should be easy)

	I got a bunch of Cisco 3110X switches for IBM Bladecenters.
	What happened. I added a new switch to the stack and the firmware was
	incompatible:

	*Mar 1 00:24:53.960: %STACKMGR-4-SWITCH_ADDED_VM: Switch 3 has been ADDED to the stack (VERSION_MISMATCH)
	*Mar 1 00:24:53.952: %STACKMGR-4-SWITCH_ADDED_VM: Switch 3 has been ADDED to the stack (VERSION_MISMATCH) (Switch 2)

	However, the auto-copy process failed:

	*Mar 1 00:28:53.975: %IMAGEMGR-6-AUTO_COPY_SW_INITIATED: Auto-copy-software process initiated for switch number(s) 3

yalla / cacti_graph_template_bmi_hs22_6-core_cpu_gt.xml

Created September 23, 2011 12:52

24-core CPU template for Cacti

	<cacti>
	<hash_000021aeee4e0ca11a898bbc3d5d2b516e0ed6>
	<name>BMI HS22 6-Core CPU GT</name>
	<graph>
	<t_title></t_title>
	<title>\|host_description\| - CPU Load</title>
	<t_image_format_id></t_image_format_id>
	<image_format_id>1</image_format_id>
	<t_height></t_height>
	<height>120</height>

yalla / xgetbv_test.c

Created July 20, 2012 21:41

Test variations of xgetbv

	#include <stdio.h>

	static unsigned long long _xgetbv(unsigned int index){
	unsigned int eax, edx;

	/* original code
	__asm__ __volatile__("xgetbv" : "=a"(eax), "=d"(edx) : "c"(index));
	*/

	/* Nokia code */

yalla / gist:3160485

Created July 22, 2012 17:47

gnuradio compile errors during gr-uhd

	Scanning dependencies of target _uhd_swig
	[ 89%] Building CXX object gr-uhd/swig/CMakeFiles/_uhd_swig.dir/uhd_swigPYTHON_wrap.cxx.o
	Linking CXX shared module _uhd_swig.so
	Undefined symbols for architecture x86_64:
	"uhd::get_version_string()", referenced from:
	__wrap_get_version_string in uhd_swigPYTHON_wrap.cxx.o
	get_version_string() in uhd_swigPYTHON_wrap.cxx.o
	ld: symbol(s) not found for architecture x86_64
	collect2: ld returned 1 exit status
	make[2]: *** [gr-uhd/swig/_uhd_swig.so] Error 1

Alexander W. Janssen yalla