Bibek Sharma Chapagain bipashant

type below:

brew update
brew install redis

To have launchd start redis now and restart at login:

brew services start redis

Tips for Money Related Arithmetic in Ruby

Never use float for performing arithmetic calculations relating to money.

Floating numbers can sometimes show funky behaviour. It is not Ruby’s fault but the very implementation of floating numbers raises precision issues.

Examples of odd behaviour:

Build tools:

  sudo yum groupinstall "Development Tools"

Dependencies:

  yum install -y gcc-c++ patch readline readline-devel zlib zlib-devel \

libyaml-devel libffi-devel openssl-devel make bzip2 autoconf automake libtool bison iconv-devel

	```
	#!/bin/sh
	echo "\nRunning rubocop 🚓 💨 💨 💨\n"

	declare -a ERRORS=()

	for file in $(git diff --cached --name-only \| grep -E '.rb')
	do
	ERRORS+=("$(rubocop $file \| grep -e 'C:' -e 'E:')")
	done

	tables = [] # or ActiveRecord::Base.connection.tables
	collation = "utf8_unicode_ci"
	char_set = "utf8"
	db = "your_database_name"
	# write out
	puts "USE #{db};"
	puts "ALTER DATABASE #{db} CHARACTER SET #{char_set} COLLATE #{collation};"
	tables.each do \|t\|
	puts "ALTER TABLE #{t} CHARACTER SET #{char_set} COLLATE #{collation};" # changes for new records
	puts "ALTER TABLE #{t} CONVERT TO CHARACTER SET #{char_set} COLLATE #{collation};" # migrates old records

	# Login as root
	ssh root@domain

	# Create deploy user
	adduser <username> #Adds User with username given. Enter Password when Prompted. Other Details are Optional
	# Add user to sudo group
	usermod -g <groupname> <username>

	# Add .ssh/authorized_keys for deploy user

	#!/bin/sh
	#
	# nginx - this script starts and stops the nginx daemin
	#
	# chkconfig: - 85 15
	# description: Nginx is an HTTP(S) server, HTTP(S) reverse \
	# proxy and IMAP/POP3 proxy server
	# processname: nginx
	# config: /usr/local/nginx/conf/nginx.conf
	# pidfile: /usr/local/nginx/logs/nginx.pid

	# I have an array of dates (both past and present) and a single date ('needle' below),
	# for which I want to find the closest date in either direction. Here's my solution;
	# can you think of a better one?

	dates.sort_by { \|date\| (date.to_time - needle.to_time).abs }.first

	class Hash

	def dig(*path)
	path.inject(self) do \|location, key\|
	location.is_a?(Hash) ? location[key] : nil
	end
	end

	end

	# Ways to execute a shell script in Ruby
	# Example Script - Joseph Pecoraro

	cmd = "echo 'hi'" # Sample string that can be used

	# 1. Kernel#` - commonly called backticks - `cmd`
	# This is like many other languages, including bash, PHP, and Perl
	# Synchronous (blocking)
	# Returns the output of the shell command
	# Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111