dkonst

# This script is inspired from: https://github.com/kigaita/PsvDecryptCore
# It allows you to decrypt psv video files for online developer training website
# The original code was written with .NET for Windows users, this one with Python tested for Mac users.

# *** Disclaimer ****
# Please only use it for your convenience so that you can watch the courses on your devices offline or for educational purposes.
# Piracy is strictly prohibited. Decrypted videos should not be uploaded to open servers, torrents, or other methods of mass distribution. Any consequences resulting from misuse of this tool are to be taken by the user.

# packages you may need to install:
# pip install python-magic

dkonst

#!/usr/bin/env ruby

# rubycocoa
require 'osx/cocoa'
include OSX
OSX.require_framework 'ScriptingBridge'

class GraffleConverter
  def initialize
    @graffle = SBApplication.applicationWithBundleIdentifier_("com.omnigroup.OmniGraffle")

dkonst

#!/usr/sbin/dtrace -s

/* Run like:
% sudo csh
# ./spy.d $PROCESS_ID [$INTERESTING_PROBEPROV]

Prints a line of dashes every 5 seconds to delineate different experiments.
*/

#pragma D option quiet

dkonst

dkonst

pid=`pgrep TextEdit` sudo dtrace -n 'pid$pid::mach_port_allocate:entry,pid$pid::mach_port_destroy:entry,pid$pid::mach_port_deallocate:entry { ustack(); }'

dkonst

$ sips -g all image.png

  # pixelWidth: 32
  # pixelHeight: 32
  # typeIdentifier: public.png
  # format: png
  # formatOptions: default
  # dpiWidth: 72.000
  # dpiHeight: 72.000
  # samplesPerPixel: 4

dkonst

system_profiler SPUSBDataType

dkonst

# query p8 cec-adapter about firmware etc
$ cec-client -d 1 -s -l
log level set to 1
Found devices: 1

device:              1
com port:            /dev/cu.usbmodemv2 r1
vendor id:           2548
product id:          1002
firmware version:    4

dkonst

var randomNumbers = [42, 12, 88, 62, 63, 56, 1, 77, 88, 97, 97, 20, 45, 91, 62, 2, 15, 31, 59, 5]

func partition(v: Int[], left: Int, right: Int) -> Int {
    var i = left
    for j in (left + 1)..(right + 1) {
        if v[j] < v[left] {
            i += 1
            (v[i], v[j]) = (v[j], v[i])
        }
    }

dkonst

- (NSTimeInterval)frameRateForMovie:(QTMovie *)movie
{
    for (QTTrack *track in [movie tracks]) {
        QTMedia *media = [track media];
        if (![media hasCharacteristic:QTMediaCharacteristicHasVideoFrameRate])
            continue;
        QTTime duration = [(NSValue *)[media attributeForKey:QTMediaDurationAttribute] QTTimeValue];
        long sampleCount = [(NSNumber *)[media attributeForKey:QTMediaSampleCountAttribute] longValue];
        return sampleCount * ((NSTimeInterval)duration.timeScale / (NSTimeInterval)duration.timeValue);
    }