Michał Szajbe szajbus

CLI tricks

Git

Po pierwsze must-have alias w systemie (~/.bashrc lub ~/.zshrc)

alias g="git"

This gist shows buggy behavior of == in Ruby 1.8.7. This affects case equality (===) too because by default === calls == internally unless redefined in specific class (like Range or Regexp).

class A
  def ==(other)
    puts "In A: calling == against #{other}"
    super
  end
end

	deduplicate_queue = fn queue, offset ->
	{_, deleted_count} =
	Verk.Queue.range!(queue, offset)
	\|> Enum.reduce({MapSet.new(), 0}, fn job, {seen, deleted_count} ->
	if MapSet.member?(seen, {job.class, job.args}) do
	case Verk.Queue.delete_job(queue, job) do
	{:ok, true} -> {seen, deleted_count + 1}
	_ -> {seen, deleted_count}
	end
	else

	#!/usr/bin/env ruby
	require 'optparse'
	require 'json'
	require 'net/http'

	options = {}
	OptionParser.new do \|opts\|
	opts.banner = "Usage: es_bench.rb [options]"

	opts.on("-c COUNT", "--count=COUNT", "Number of requests") do \|count\|

	# Usage:
	#
	# redis = Redis.new(url: ENV["REDIS_URL"])
	# keys = redis.scan_each(match: 'foo*', count: 1_000)
	# keys.extend(EachWithProgress)
	#
	# keys.each_with_progress do \|key\|
	# redis.del(key)
	# end

	class Buffer
	def initialize(size = 1_000, &blk)
	@size = size
	@callback = blk
	@queue = []
	@lock = Mutex.new
	end

	def <<(object)
	@lock.synchronize do

	require 'hashie_walker' # https://github.com/monterail/hashie_walker
	require 'active_support/inflector'

	hash = {
	"CamelCased" => {
	"AnotherOne" => {
	"Foo" => "Bar",
	"FooFooFoo" => "Dupa"
	}
	}

	#!/usr/bin/env bash

	if ! which openssl > /dev/null; then
	echo Install openssl
	exit 1
	fi

	if ! which curl > /dev/null; then
	echo Install curl
	exit 1

	#!/bin/bash
	# Filter requests to Rails application by IP address
	#
	# Usage:
	# tail -f log/production.log \| log_filter.sh [IP]
	#
	# By default tries to obtain current IP address from $SSH_CLIENT or by querying http://ifconfig.me
	if [[ $# -eq 0 ]]; then
	if [[ -z $SSH_CLIENT ]]; then
	ip=$(curl -s http://ifconfig.me)

	# Finds equilibrium index of a sequence.
	# Returns equilibrium index or -1 if no equilibrium exists.

	def equi(arr)
	left = sums(arr)
	right = sums(arr.reverse)
	for i in 1..(arr.length) do
	return (i-1) if left[i-1] == right[-i]
	end
	-1