GalenkoEugene

• Find files containing "foo", and print the line matches in context: ag foo
• Find files containing "foo" in a specific directory: ag foo path/to/directory
• Find files containing "foo", but only list the filenames: ag -l foo
• Find files containing "FOO" case-insensitively, and print only the match, rather than the whole line: ag -i -o FOO
• Find "foo" in files with a name matching "bar": ag foo -G bar

GalenkoEugene

require "benchmark/ips"

ARRAY = [*1..100]

def fast
  index = 0
  while index < ARRAY.size
    ARRAY[index] + index
    index += 1
  end

GalenkoEugene

git config --global pager.branch false

https://stackoverflow.com/questions/48341920/git-branch-command-behaves-like-less/48370253#48370253

GalenkoEugene

#!/usr/bin/env ruby

# List all keys stored in memcache. 
# Credit to Graham King at http://www.darkcoding.net/software/memcached-list-all-keys/ for the original article on how to get the data from memcache in the first place.

require 'net/telnet'

headings = %w(id expires bytes cache_key)
rows = []

GalenkoEugene

Modifying an Existing Docker Image

To install a custom package or modify an existing docker image we need to

1. run a docker a container from the image we wish to modify
2. modify the docker container
3. commit the changes to the container as a docker image
4. test changes made to image

1.) Running a docker container from an image

GalenkoEugene

FROM ubuntu:latest

MAINTAINER Evhenii Halenko 'Re4port@ukr.net'

RUN apt update -y \
    && apt install -y build-essential \
      netcat \
      curl \
      wget \
      tzdata \

GalenkoEugene

# lib/custom_logger.rb
class CustomLogger < Logger
  def format_message(severity, timestamp, progname, msg)
    "#{timestamp.to_formatted_s(:db)} #{severity} #{msg}\n"
  end
end

logfile = File.open("#{Rails.root}/log/custom.log", 'a')  # create log file
logfile.sync = true  # automatically flushes data to file
CUSTOM_LOGGER = CustomLogger.new(logfile)  # constant accessible anywhere

GalenkoEugene

Dir['*/**/*.js', '*/**/*.css'].each do |f|
  File.write f, File.read(f).force_encoding('ISO-8859-1').encode('UTF-8')
end

GalenkoEugene

# converts all rhtml files to html.erb
require 'fileutils'

files = `find app/views -name '*.rhtml'`
file_ary = files.split("\n")
file_ary.each do |file|
  new_file = file.gsub('rhtml', 'html.erb')
  FileUtils.mv file, new_file
end
puts "#{file_ary.length} files converted."

GalenkoEugene

https://github.com/Microsoft/TypeScript/issues/2440