NazwaPL SSL certificate chain
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Here you can find SSL certificates needed to create SSL chain if you use certificate from NazwaPL.

How to get image details like creation timestamp using MiniMagic
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How to get image details like creation date and tile using MiniMagic

Generate fake screenshot mockups in minutes
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This app allows you to upload screenshots and paste them into a fake phone/laptop mockup.

https://mockuphone.com/

Disable `Missing frozen string literal comment.` Rubocop warning
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If you use a Rubocop-connected linter in your IDE, one thing that keeps driving you mad is `Missing frozen string literal comment.` warning. In this post, I'll show you how to disable it.

Define routes for external links in rails
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You can define external urls in routes.rb instead of creating helpers manually

https://guides.rubyonrails.org/routing.html#direct-routes

Pundit Decorator
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Organize Pundit error messages and redirects in a decorator. Simplify reuse and maintenance

Use React.Fragment to avoid creating useless divs
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This jsx ```react <React.Fragment> <h1>Hello World</h1> <p>This is paragraph</p> </React.Fragment> ``` Will be compiled into this html ```h...

TCP Server in Elixir
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How to setup a simple, but robust TCP server in Elixir

Basic requirements for Facebook Cover Video
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Essential requirements for Facebook Cover Video: Recommended resolution: 820 x 462 px Duration: 20 - 90 seconds Filetype: mp4 Remember top and bottom...

https://www.kapwing.com/resources/how-to-make-a-facebook-cover-video/

Fix nokogiri installing error (libxml2)
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While running bundle install in Rails app you haven't used previously, you may encounter `ERROR: cannot discover where libxml2 is located on your system.` error. This indicates that Ruby can't find libxml2 - although it's probably installed, with Xcode! Here you'll see how to resolve this issue.

How to clear sidekiq queue
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How to clear sidekiq queue in 4 steps?

Flush dns in macOS
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``` sudo killall -HUP mDNSResponder ```

How to restore deleted git branch
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Short and working solution to restore deleted git branch

Labelary - an online ZPL editor
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Labelary is an online ZPL (Zebra Programming Language) editor and viewer

http://labelary.com/viewer.html

Local HTTP server using ruby
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``` ruby -run -ehttpd . -p8000 ```

Autocomplete SSH hosts in Bash
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``` # ~/.bash_profile _complete_ssh_hosts () { COMPREPLY=() cur="${COMP_WORDS[COMP_CWORD]}" comp_ssh_hosts=`cat ~/.ssh/known_ho...

Transparent textures - a subtle backgrounds repository and generator
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Standing on the shoulders of Subtle Patterns. Built and maintained by mikehearn.

https://www.transparenttextures.com/

Launching subprocessess in Ruby
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This graph shows several ways to launch subprocess in Ruby.

Hello World in Slack
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See the link for setup instructions. Then in ruby: ```ruby conn = Faraday.new(your_slack_webhook_url) conn.post do |req| req.headers['Content-Type'] ...

https://api.slack.com/tutorials/slack-apps-hello-world

Line icons based on Font Awesome
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Replace Font Awesome with modern line icons with a single line of code.

https://icons8.com/line-awesome