Ev Dolzhenko dolzenko

Ghostty Keyboard Shortcuts

Default keyboard shortcuts for Ghostty terminal emulator. Platform-specific differences are noted where applicable.

Window Management

Action	Windows/Linux	macOS
New window	Ctrl+Shift+N	Cmd+N
Close window	Alt+F4	Cmd+Shift+W

Ruby 3.1 on Rails

Actions required to use Ruby 3.1.0 with Rails

Rails 7.0.Z

Rails 7.0.1 is compatible with Ruby 3.1.0.
Rails 7.0.1 addes net-smtp, net-imap and net-pop gems as Action Mailbox and Action Mailer dependency, you do not need to add them explicitly in your application Gemfile anymore.
thor 1.2.1 has been released. You will not see DidYouMean::SPELL_CHECKERS.merge deprecate warnings anymore.

Rails 6.1.Z

Use Rails 6.1.5 to support database.yml with aliases and secrets.yml with aliases.

Action	Command
Move to next chat	Ctrl + Tab
Move to next chat	Ctrl + PageDown
Move to next chat	Alt + Arrow Down
Move to previous chat	Ctrl + Shift + Tab
Move to previous chat	Ctrl + PageUp
Move to previous chat	Alt + Arrow Up
Go to Previous Folder	Ctrl + Shift + Arrow Up
Go to Next Folder	Ctrl + Shift + Arrow Down

set -e, -u, -o, -x pipefail

The set lines

These lines deliberately cause your script to fail. Wait, what? Believe me, this is a good thing.
With these settings, certain common errors will cause the script to immediately fail, explicitly and loudly. Otherwise, you can get hidden bugs that are discovered only when they blow up in production.

set -euxo pipefail is short for:

set -e
set -u

README

Let Tomcat is download and installed under /opt/tomcat. Also, let tomcat be a non-provileged user under which the server will be running.

We assume that we keep server's binaries under /opt/tomcat and we will create a server instance named foo under /var/tomcat/ (carrying its own conf, logs, webapps, work, lib directories). See also https://dzone.com/articles/running-multiple-tomcat.

Create a template service unit file at /etc/systemd/system/tomcat@.service:

	exceptions = []
	tree = {}
	ObjectSpace.each_object(Class) do \|cls\|
	next unless cls.ancestors.include? Exception
	next if exceptions.include? cls
	next if cls.superclass == SystemCallError # avoid dumping Errno's
	exceptions << cls
	cls.ancestors.delete_if {\|e\| [Object, Kernel].include? e }.reverse.inject(tree) {\|memo,cls\| memo[cls] \|\|= {}}
	end

	Meta (Instagram, Facebook)
	// Узлы
	157.240.253.174, 157.240.253.172, 157.240.253.167, 157.240.253.63, 157.240.253.32
	157.240.252.174, 157.240.252.172, 157.240.252.167, 157.240.252.63, 157.240.252.38
	57.144.112.34, 57.144.110.1, 157.240.205.174, 87.245.223.97

	// Подсети
	213.102.128.0/24
	204.15.20.0/22
	199.201.0.0/16

	if Rails.env.development?
	FileUtils.mkdir_p(Rails.root.join('config', 'certs'))
	key_path = Rails.root.join('config', 'certs', 'development.key')
	crt_path = Rails.root.join('config', 'certs', 'development.crt')
	unless File.exist?(key_path) && File.exist?(crt_path)

	def cert_domain
	'localhost' # Setting[:cookie_domain] \|\| 'localhost'
	end

	# Running specific applications through a VPN with network namespaces

	# Initial state
	curl ifconfig.co/city
	sudo ip link list
	sudo ip netns list

	# Disable Uncomplicated Firewall (Ubuntu)
	sudo ufw disable

	use std::str;

	fn main() {
	// -- FROM: vec of chars --
	let src1: Vec<char> = vec!['j','{','"','i','m','m','y','"','}'];
	// to String
	let string1: String = src1.iter().collect::<String>();
	// to str
	let str1: &str = &src1.iter().collect::<String>();
	// to vec of byte