artkirienko

General: UNIX, HTTP/HTTPS/SSH, API, regex

• В чём разница между процессом и тредом?

• Что такое мультизадачность?

• Устройство файловой системы. Файловые дескрипторы, inode.

• Знаешь ли, что такое race condition? Сталкивался ли в реальной жизни (когда возникало и как боролся)? Когда может произойти?

artkirienko

(38.5 MiB * 8192 [converts MiB to kBit]) / 260 seconds = ~1213 kBit/s total bitrate
1213 - 96 kBit/s (desired audio bitrate) = 1117 kBit/s video bitrate

38.5 * 8192.0 / (4 * 60 + 20) - 96 = 1117

ffmpeg -y -i input.mp4 -c:v libx264 -preset medium -movflags faststart -b:v 1117k -pass 1 -an -f mp4 /dev/null && \
ffmpeg -i input.mp4 -c:v libx264 -preset medium -movflags faststart -b:v 1117k -pass 2 -b:a 96k output.mp4

artkirienko

# coderpad test
# https://coderpad.io/
# click Try Sandbox
# choose Ruby
# paste:

# Determine if a word or phrase is an isogram.

# An isogram (also known as a "nonpattern word") is a word or phrase
# without a repeating letter, however spaces and hyphens are allowed

artkirienko

# alternative to what is explained in the article Ruby Blocks as Dynamic Callbacks: 
# http://www.mattsears.com/articles/2011/11/27/ruby-blocks-as-dynamic-callbacks

class Twitter
  def tweet(msg, &block)
    proxy = DSL[block]
    publish(msg)
    proxy.respond_with(:success)
  rescue => e
   proxy.respond_with(:failure, e.message)

artkirienko

# Assume we are in your home directory
cd ~/

# Clone the repo from GitLab using the `--mirror` option
$ git clone --mirror git@your-gitlab-site.com:mario/my-repo.git

# Change into newly created repo directory
$ cd ~/my-repo.git

# Push to GitHub using the `--mirror` option.  The `--no-verify` option skips any hooks. 

artkirienko

wget --no-check-certificate --content-disposition https://github.com/joyent/node/tarball/v0.7.1
# --no-check-cerftificate was necessary for me to have wget not puke about https
curl -LJO https://github.com/joyent/node/tarball/v0.7.1

artkirienko

### NOT A SCRIPT, JUST A REFERENCE!

# install dante-server
sudo apt update
sudo apt install dante-server

# or download latest dante-server deb for Ubuntu, works for 16.04 and 18.04:
wget http://archive.ubuntu.com/ubuntu/pool/universe/d/dante/dante-server_1.4.2+dfsg-2build1_amd64.deb
# or older version:
wget http://ppa.launchpad.net/dajhorn/dante/ubuntu/pool/main/d/dante/dante-server_1.4.1-1_amd64.deb

artkirienko

# Adapted from https://tinyapps.org/blog/nix/201701240700_convert_asciidoc_to_markdown.html
# Using asciidoctor 1.5.6.1 and pandoc 2.0.0.1
# Install pandoc and asciidoctor

$ sudo apt install asciidoctor
$ sudo wget https://github.com/jgm/pandoc/releases/download/2.0.0.1/pandoc-2.0.0.1-1-amd64.deb
$ sudo dpkg -i pandoc-2.0.0.1-1-amd64.deb

# Convert asciidoc to docbook using asciidoctor

artkirienko

Keybase proof

I hereby claim:

• I am artkirienko on github.
• I am artkirienko (https://keybase.io/artkirienko) on keybase.
• I have a public key ASDq3RvC1_UrisZ9ycm5ltAuPTQbUkDkRgWc1jwe0lmTJAo

To claim this, I am signing this object:

artkirienko

# frozen_string_literal: true

require 'octokit'

def configure
  Octokit.configure do |c|
    c.auto_paginate = true
  end
end