most of these require logout/restart to take effect
# Enable character repeat on keydown
defaults write -g ApplePressAndHoldEnabled -bool false
# Set a shorter Delay until key repeat
# Modify this file accordingly for your specific requirement. | |
# http://www.thegeekstuff.com | |
# 1. Delete all existing rules | |
iptables -F | |
# 2. Set default chain policies | |
iptables -P INPUT DROP | |
iptables -P FORWARD DROP | |
iptables -P OUTPUT DROP |
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
#!/usr/bin/env python3 | |
"""A simple python script template. | |
""" | |
import os | |
import sys | |
import argparse |
#!/bin/sh | |
### | |
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer) | |
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos | |
### | |
# Alot of these configs have been taken from the various places | |
# on the web, most from here | |
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx |
Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.
$ python -m SimpleHTTPServer 8000
#EXTM3U | |
#EXTINF:-1,BBC - Radio 1 | |
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p | |
#EXTINF:-1,BBC - Radio 2 | |
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio2_mf_p | |
#EXTINF:-1,BBC - Radio 3 | |
http://open.live.bbc.co.uk/mediaselector/5/select/version/2.0/mediaset/http-icy-aac-lc-a/format/pls/vpid/bbc_radio_three.pls | |
#EXTINF:-1,BBC - Radio 4 | |
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio4fm_mf_p | |
#EXTINF:-1,BBC - Radio 5 live |
#! /bin/bash | |
# | |
# Diffusion youtube avec ffmpeg | |
# Configurer youtube avec une résolution 720p. La vidéo n'est pas scalée. | |
VBR="2500k" # Bitrate de la vidéo en sortie | |
FPS="30" # FPS de la vidéo en sortie | |
QUAL="medium" # Preset de qualité FFMPEG | |
YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2" # URL de base RTMP youtube |