Christopher Barnes chrisbarnes2000

Documentation

docker run --rm --name jenkins -p 8080:8080 -p 50000:50000 jenkins/jenkins:2.303.1-jdk8
docker run --rm --name jenkins -p 8080:8080 -p 50000:50000 -v jenkins_home:/var/jenkins_home jenkins/jenkins:2.303.1-jdk8

Open Automator
Create a new document
Select Quick Action
Set “Service receives selected” to files or folders in any application
Add a Run Shell Script action
- your default shell should already be selected, otherwise use /bin/zsh for macOS 10.15 (”Catalina”) or later
- older versions of macOS use /bin/bash
if you're using something else, you probably know what to do 😉

	<a href="https://facebook.com/sharer/sharer.php?u={yourUrl}">
	Share on Facebook
	</a>

	<a href="https://twitter.com/intent/tweet/?text={yourText}&url={yourUrl}">
	Share on Twitter
	</a>

	<a href="https://www.tumblr.com/widgets/share/tool?posttype=link&title={yourTitle}&caption={yourUrl}&content={yourContent}&canonicalUrl={yourUrl}&shareSource=tumblr_share_button">
	Share on Tumblr

	# We will use wave package available in native Python installation to read and write .wav audio file
	import wave
	# read wave audio file
	song = wave.open("song.wav", mode='rb')
	# Read frames and convert to byte array
	frame_bytes = bytearray(list(song.readframes(song.getnframes())))

	# The "secret" text message
	string='Peter Parker is the Spiderman!'
	# Append dummy data to fill out rest of the bytes. Receiver shall detect and remove these characters.

	# Use wave package (native to Python) for reading the received audio file
	import wave
	song = wave.open("song_embedded.wav", mode='rb')
	# Convert audio to byte array
	frame_bytes = bytearray(list(song.readframes(song.getnframes())))

	# Extract the LSB of each byte
	extracted = [frame_bytes[i] & 1 for i in range(len(frame_bytes))]
	# Convert byte array back to string
	string = "".join(chr(int("".join(map(str,extracted[i:i+8])),2)) for i in range(0,len(extracted),8))

	;nyquist plug-in
	;version 1
	;type process
	;name "Subliminal..."
	;action "Subliminal..."
	;control carrier "Carrier" real "Hz" 17500 14000 20000

	(setf carrier (max 14000 (min carrier 20000)))

	;; We have two Nyquist frequencies, carrier/2 and sound-srate/2.

	# We will use wave package available in native Python installation to read and write .wav audio file
	import wave
	# read wave audio file
	song = wave.open("song.wav", mode='rb')
	# Read frames and convert to byte array
	frame_bytes = bytearray(list(song.readframes(song.getnframes())))

	# The "secret" text message
	string='Peter Parker is the Spiderman!'
	# Append dummy data to fill out rest of the bytes. Receiver shall detect and remove these characters.

	;; replace the below frequency number with the original frequency used to embed the secret
	(mult track (hzosc 17500.0))