jboner

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

andreyvit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

davisford

sudo apt-get install avahi-daemon avahi-discover avahi-utils libnss-mdns mdns-scan

ubermuda

server {
	listen 127.0.0.1:9000;
	location / {
		proxy_pass http://unix:/var/run/docker.sock:/;
	}
}

rothgar

# Idempotent way to build a /etc/hosts file with Ansible using your Ansible hosts inventory for a source.
# Will include all hosts the playbook is run on.
# Inspired from http://xmeblog.blogspot.com/2013/06/ansible-dynamicaly-update-etchosts.html

- name: "Build hosts file"
  lineinfile: dest=/etc/hosts regexp='.*{{ item }}$' line="{{ hostvars[item].ansible_default_ipv4.address }} {{item}}" state=present
  when: hostvars[item].ansible_default_ipv4.address is defined
  with_items: groups['all']

sdague

#!/usr/bin/python

import dbus
import dbus.glib
import gobject
import subprocess


def lock():
    print "Screen saver turned on"

nfarrar

#!/usr/bin/env python

import argparse
import logging
import logging.handlers

parser = argparse.ArgumentParser(__file__,
                                 description="A syslog message generator")

parser.add_argument("--address",

fanf

if_dir = os.getenv('HOME') .. '/.imapfilter/'

---------------
--  Options  --
---------------

-- time in second before deciding the server timeouted
options.timeout = 120
-- auto-subscribe to new directories
options.subscribe = true

rmondello

Exporting (iCloud) Keychain and Safari credentials to a CSV file

Update (October 2021)

Exporting password + one-time code data from iCloud Keychain is now officially supported in macOS Monterey and Safari 15 (for Monterey, Big Sur, and Catalina). You can access it in the Password Manager’s “gear” icon (System Preferences > Passwords on Monterey, and Safari > Passwords everywhere else), or via the File > Export > Passwords... menu item). You shouldn't need to hack up your own exporter anymore.

Original, Obsolete Content (2014)

After my dad died, I wanted to be able to have access any of his online accounts going forward. My dad was a Safari user and used iCloud Keychain to sync his credentials across his devices. I don’t want to have to keep an OS X user account around just to access his accounts, so I wanted to export his credentials to a portable file.

romainl

--langdef=less
--langmap=less:.less
--regex-less=/^[ \t&]*#([A-Za-z0-9_-]+)/\1/i,id,ids/
--regex-less=/^[ \t&]*\.([A-Za-z0-9_-]+)/\1/c,class,classes/
--regex-less=/^[ \t]*(([A-Za-z0-9_-]+[ \t\n,]+)+)\{/\1/t,tag,tags/
--regex-less=/^[ \t]*@media\s+([A-Za-z0-9_-]+)/\1/m,media,medias/
--regex-less=/^[ \t]*(@[A-Za-z0-9_-]+):/\1/v,variable,variables/
--regex-less=/\/\/[ \t]*(FIXME|TODO)[ \t]*\:*(.*)/\1/T,Tag,Tags/

--langdef=scss