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Andre LaBranche dreness

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import colorsys
def ColorSpread(count, saturation, lightness):
Compute a stepped spectrum sequence of color values that are evenly
distributed around the 360 degree hue wheel. Returns an array of rgb
values in hex.
dreness /
Created Apr 3, 2014
A possibly useful template for runtime patching with lldb.
import lldb
def patchAVAssetWriterInput64(frame, bp_loc, dict):
Replace the 'outputSettings' argument to AVAssetWriterInput, to specify
a different video output codec.
This function wants to be called from a breakpoint command.
Use my setbp() function to create the breakpoint and breakpoint command.
dreness / iops
Created Jul 3, 2014
pgbench on 6c 2013 mac pro, internal SSD: 35,000+ iops, 12430 transactions per second.
View iops
# make a new DB, in this case at ~/tmpdb, which is on the mac pro's internal SSD (disk0)
% ./bin/initdb -D ~/tmpdb
# set checkpoint_segments to 32 in postgres.conf, then start DB.
% ./bin/postgres -D /Users/andre/tmpdb
LOG: database system was shut down at 2014-07-03 11:49:38 PDT
LOG: database system is ready to accept connections
dreness /
Created Jan 9, 2015
Tiny shell script that prints the current iTunes track info and remaining time; does not scroll.
while true ; do
osascript -- - <<'EOF'
tell app "iTunes"
set artist_track to artist of current track ¬
dreness / ytdl-hfr-mux.txt
Last active Aug 29, 2015
The magic youtube-dl incantation to prefer high frame-rate content and mux the separate audio and video into a single file.
View ytdl-hfr-mux.txt
# list the available formats for a youtube URL.
bash-3.2$ youtube-dl -F ''
[youtube] NlFU2wM-f8g: Downloading webpage
[youtube] NlFU2wM-f8g: Extracting video information
[youtube] NlFU2wM-f8g: Downloading DASH manifest
[info] Available formats for NlFU2wM-f8g:
format code extension resolution note
140 m4a audio only DASH audio 129k , m4a_dash container, aac @128k (44100Hz), 5.35MiB (worst)
141 m4a audio only DASH audio 255k , m4a_dash container, aac @256k (44100Hz), 10.62MiB
160 mp4 230x144 DASH video 112k , 15fps, video only, 4.34MiB
dreness / recent-attachments.sql
Last active Nov 6, 2015
Show recent file attachments from's chat DB
View recent-attachments.sql
-- sqlite3 ~/Library/Messages/chat.db < recent-attachments.sql
-- dates in the DB are NSDate. NSDate.h says: NSTimeIntervalSince1970 978328800
SELECT Datetime(created_date + 978328800, 'unixepoch', 'localtime') 'created',
Printf("%.2f", Cast (total_bytes AS FLOAT) / 1000 / 1000) 'megabytes', 'buddy',
FROM attachment
JOIN message_attachment_join
dreness /
Last active Dec 21, 2015
Send email notifications of shares and blocks.
# -*- coding: utf-8 -*-
import time, os
import re
from email.mime.text import MIMEText
from subprocess import Popen, PIPE
from datetime import datetime, timedelta
# Watch the bitcoin log, send notifications of shares and blocks, with
dreness /
Created Oct 6, 2013
For informational / forensic purposes only. If you still have a working Airport Extreme base station, this might work, but I doubt it, cause even apple's link to the MIB file is dead. Newer Airport base station models don't have SNMP.
#!/usr/bin/perl -w
# Fetch and display wireless stats from an Apple Airport Extreme Base Station.
# Andre LaBranche, dre at mac dot com, 4/27/07
use Switch;
use Getopt::Long qw(:config permute bundling);
# User Tuneables Start
# We need to define base stations and their SNMP community names for querying.
dreness /
Created Nov 3, 2013
My 8 drive RAID array is a little weird. Throughput is decent, but latency is kinda bad. This causes World of Warcraft for mac to not be able to keep up when recording in-game video at high data rates (200+ MB/s), which of course is the only way to get large frame size *and* high frame rate :) It took me literally years to finally think of this …
set -x
# 11/3/2013 - dre at mac dot com
# Create a ramdisk big enough for World of Warcraft (mac version only!) to
# store a few video capture files. Shortly after each file is written, copy it
# to rotational storage, delete it from the ramdisk, and then symlink it from
# rotational back to the ramdisk.
dreness / dezalgo.php
Last active Feb 25, 2016
exorcise the mind of zalgo from a text file
View dezalgo.php
## install composer
# mkdir dezalgo ; cd dezalgo
## place dezalgo.php (this file) into the new directory
# composer require mdwheele/zalgo
# php dezalgo.php --infile MyBestIRCLog --outfile MySafeIRCLog
require __DIR__ . '/vendor/autoload.php';
use Zalgo\Mood;
use Zalgo\Soul;
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