Skip to content

Instantly share code, notes, and snippets.

View danieldk's full-sized avatar

Daniël de Kok danieldk

View GitHub Profile
#!/usr/bin/env bash
set -e
addEntries() {
# check if universal access / custom menu key exists
if defaults read com.apple.universalaccess com.apple.custommenu.apps > /dev/null 2>&1; then
defaults delete com.apple.universalaccess com.apple.custommenu.apps
fi
@cecilemuller
cecilemuller / readme.md
Last active January 29, 2016 15:09
Let's encrypt (Nginx, Ubuntu 14.04 LTS)

Install the client:

apt-get install git
git clone https://github.com/letsencrypt/letsencrypt
cd letsencrypt

Generate certificates using manual mode:

@agaviria
agaviria / Ledger_3_commands.dat
Created August 10, 2012 20:03
Collection of ledger-cli commands
# comments example for .dat or .ledger files
@smallexample
; This is a single line comment,
# and this,
% and this,
| and this,
* and this.
# If you have a deeply nested tree of accounts,
# it may be convenient to define an alias, for example:
@jboner
jboner / latency.txt
Last active May 26, 2024 07:33
Latency Numbers Every Programmer Should Know
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