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Use Multiple SSH Keys for Git host websites (Github, Gitlab)

This is guide about how to configure multiple SSH keys for some Git host websites such as Github, Gitlab, among others.

Creating SSH keys

1. Create SSH directory:

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Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "[email protected]"

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System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

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Advanced Git

Git foundations

Data storage

• Git is like a key-value store
  • key = data
  • value = hash of the data
• The key (SHA1)

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figlet "I've got something to say"

figlet -f thick "Make Tech ASCIIer"

date | figlet -f basic

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Windows Preparation

1. Ensure hypervisor functionality is enabled in BIOS.

   • I know it sounds stupid, but if you already have it enabled, disable it, restart the machine, and enable it again.
   • Otherwise you will hit microsoft/WSL#5363

2. Launch a PowerShell prompt in Administrator mode [Win+X > Windows PowerShell (Admin)]

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart

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Reference: https://help.ubuntu.com/community/Oracle%20Instant%20Client

Tested on: Ubuntu 18.04, 20.04

1. Decide which version of the Oracle client to install

   • Each version of the client supports certain versions of the database; for example, Oracle client 12.1 supports Oracle database 10.2 - 19c
   • See here for more information: http://support.oracle.com/epmos/faces/DocumentDisplay?id=207303.1

2. Download the Oracle client packages

   • Go here and download the desired RPM package(s): https://www.oracle.com/database/technologies/instant-client/downloads.html

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Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

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Markdown Text 101

Want to inject some flavor into your everyday text chat? You're in luck! Discord uses Markdown, a simple plain text formatting system that'll help you make your sentences stand out. Here's how to do it! Just add a few characters before & after your desired text to change your text! I'll show you some examples...

What this guide covers:

• Text Formatting
• Organizational Text Formatting
  • Headers
• Masked Links

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# To list installed distributions
wsl -l
wsl --list

# To list installed distributions along with its running status and wsl config being 1 or 2
wsl -l --verbose
wsl -l -v

# To run a specific distro
wsl -d distro_name