hurricane-voronin

Naming Classes Without a 'Manager'

• SomethingManager
• Design Patterns
  • Creational
    • Factory Method
    • Abstract Factory
    • Builder
• Prototype

ixdy

Setting up ssh public key authentication on macOS using a YubiKey 4

I largely followed Florin's blog post, but have a few notes to add regarding issues I encountered:

Basic setup notes

1. I used a YubiKey 4, while the blog describes using a YubiKey NEO. I'm sure a YubiKey 5 would also work. I'm also running macOS 10.13.6.
2. I installed GPGTools as recommended. However, as I'll note later, it seems that gpg-agent only automatically starts when gpg is used; for ssh, you'll need to ensure it's running.
3. Before generating your keys, decide what key size you want to use. If you run the list command inside gpg --edit-card, look for the Key attributes line to see what is currently selected. On my YubiKey 4, it defaulted to 2048 bits for all keys:

Key attributes ...: rsa2048 rsa2048 rsa2048

hrchu

@startuml
skinparam handwritten true
"You/Browser" -> slack.com: 1. I would like to access my files on Google Drive via your interface.
slack.com -> "You/Browser": 2. You should apply the "Authorization Code" from Google for me first.
"You/Browser" -> account.google.com: 3. I would like to permit slack.com to access my files.
account.google.com -> "You/Browser": 4. Are you sure?
"You/Browser" -> account.google.com: 5. [Y]
account.google.com -> "You/Browser": 6. Okay. Here is the "Authorization Code." Plz give it back to slack.com now.
"You/Browser" -> slack.com: 7. You can do what I asked now (with the Authorization Code which is just received from Google.) 
slack.com -> account.google.com: 8. I would like to exchange the "Authorization Code" for the "Access Token."

hrchu

How to get a stack trace for each thread in a running python script

Sometimes a python script will simply hang forever with no indication of where things went wrong. Perhaps it's polling a service that will never return a value that allows the program to move forward. Here's a way to see where the program is currently stuck.

Install gdb and pyrasite

Install gdb.

# Redhat, CentOS, etc