Alex Emelyanov holyketzer

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

Commands examples

If the namespace is not used then the commands will perform on top of the default database. bundle exec rake db:create bundle exec rake db:migrate

By using the namespace we are going to use all the configuration for our alternate DB. bundle exec rake store:db:create bundle exec rake store:db:migrate

	Spree::CheckoutController.class_eval do
	def update_with_marketplace_sync
	if @order.completed?
	# Тут используешь @order или @current_order пока он ещё не обнулён и всё другое
	end

	update_without_marketplace_sync
	end

	alias_method_chain :update, :marketplace_sync

	#!/bin/sh

	HOST='api.*****.com'
	USER='[email protected]'
	PASSWORD='password'

	CLIENT_ID='web'

	ACCESS_TOKEN=$(curl -s -X POST --data "grant_type=password&username=$USER&password=$PASSWORD" http://$HOST/api/oauth/token \| jq -r '.access_token')
	echo "Access Token: $ACCESS_TOKEN"

	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