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launchctl unload -w  /System/Library/LaunchDaemons/com.apple.spindump.plist

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Senec to Influx

Extract values from Senec JSON with string-hex-floats and push them to InfluxDB

Run example

SENEC_URL=http://senec.local/lala.cgi INFLUX_URL=https://influx.yourserver.net/ INFLUX_ORG=your_org INFLUX_TOKEN=your_token ./senec-to-influx.py

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How to extract a single file with its history from a git repository

These steps show two less common interactions with git to extract a single file which is inside a subfolder from a git repository. These steps essentially reduce the repository to just the desired files and should performed on a copy of the original repository (1.).

First the repository is reduced to just the subfolder containing the files in question using git filter-branch --subdirectory-filter (2.) which is a useful step by itself if just a subfolder needs to be extracted. This step moves the desired files to the top level of the repository.

Finally all remaining files are listed using git ls, the files to keep are removed from that using grep -v and the resulting list is passed to git rm which is invoked by git filter-branch --index-filter (3.). A bit convoluted but it does the trick.

1. copy the repository to extract the file from and go to the desired branch

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#! /bin/sh
find . -name "*.nib" -type d | awk '{sub(/.nib/,"");print}' | xargs -I % ibtool --write %.xib --upgrade %.nib

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#!/usr/bin/env sh
# Stored at: https://gist.github.com/4452136
# Assumes the given path points to a FLV file with MP4 video.

# Use ffmpeg to repackage the file.
ffmpeg -i "$1" -acodec copy -vcodec copy "$1".mp4


# old version:
# Not used anymore as VLC seems to have a bug that creates broken

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<?xml version="1.0"?>
<!--
	Stylesheet to list all tag-name paths in an XML file, including attributes.

	2013 Sven-S. Porst <porst@sub.uni-goettingen.de>
-->
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

	<xsl:output method="text" />

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{ a: 7, b: 2, c: 5, d: 4, e: 1, f: 3, g: 8, h: 6 }

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<?xml version="1.0" encoding="UTF-8"?>
<!--
	Attempt to use xsl:key on data not stored in the document itself.

	We _can_ load external XML into a variable using document() and use
	the key() function on that.

	We _cannot_ include the XML into our stylesheet and use the key()
	function on that.

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HandBrakeCLI --input input.dv --output output.mp4 --format mp4 --encoder x264 --x264opts ref=2:bframes=2:subq=6:mixed-refs=0:weightb=0:8x8dct=0:trellis=0 --optimize --quality 0.5 --audio 1 --aencoder ca_aac --ab 128 --arate 32 --aname English

HandBrakeCLI-0.9.3 --input input.dv --output result.ogv --format ogm --encoder theora --optimize --quality 0.6 --audio 1 --aencoder vorbis --ab 128 --arate 32 --aname English

# Commands to convert DV (or any) video to MP4 and OGM using the CLI version of HandBrake.
# The MP4 result it simple-minded enough to be played by QuickTime.
# The audio bitrate is picked to match the 32kHz audio of some DV video.
# You need the 0.9.3 version for the ogg files, as that feature was removed in 0.9.4.

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#! /bin/sh
find . -name "*.xib" -type f | awk '{sub(/.xib/,"");print}' | xargs -I % ibtool --compile %.nib %.xib