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This article is now published on my website: Prefer Subshells for Context.
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
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This playbook has been removed as it is now very outdated. |
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set softtabstop=2 | |
set shiftwidth=2 | |
set tabstop=2 | |
set expandtab "expandtab (whitespace) | |
set number "line numbers | |
set ai "autoindent | |
set si "smartindent | |
set tw=79 "wrap on 79 | |
set sta "smarttab | |
set history=100 "remember more than 20 cmd-history |
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#!/bin/bash | |
# License: Public Domain. | |
# Author: Joseph Wecker, 2012 | |
# | |
# -- DEPRICATED -- | |
# This gist is slow and is missing .bashrc_once | |
# Use the one in the repo instead! https://github.com/josephwecker/bashrc_dispatch | |
# (Thanks gioele) | |
# | |
# Are you tired of trying to remember what .bashrc does vs .bash_profile vs .profile? |
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#!/bin/sh | |
# Credits to: | |
# - http://vstone.eu/reducing-vagrant-box-size/ | |
# - https://github.com/mitchellh/vagrant/issues/343 | |
aptitude -y purge ri | |
aptitude -y purge installation-report landscape-common wireless-tools wpasupplicant ubuntu-serverguide | |
aptitude -y purge python-dbus libnl1 python-smartpm python-twisted-core libiw30 | |
aptitude -y purge python-twisted-bin libdbus-glib-1-2 python-pexpect python-pycurl python-serial python-gobject python-pam python-openssl libffi5 |
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[alias] | |
st = "!git_stash_check; git status" |
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"""sendmail email backend class for postfix.""" | |
import threading | |
from django.conf import settings | |
from django.core.mail.backends.base import BaseEmailBackend | |
from subprocess import Popen,PIPE | |
class EmailBackend(BaseEmailBackend): | |
def __init__(self, fail_silently=False, **kwargs): |
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