Hunter Wei hunterwei

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

Pushing to Multiple Git Repos

If a project has to have multiple git repos (e.g. Bitbucket and Github) then it's better that they remain in sync.

Usually this would involve pushing each branch to each repo in turn, but actually Git allows pushing to multiple repos in one go.

If in doubt about what git is doing when you run these commands, just

See this SO answer.

Disable large send offload in host on vEthernet (to avoid messing with non-virtual adapters). Disable larg send offload in guest for all adapters (unable to predict adapter names and probably all of them are real).

Step 1 - Create a New SSH Key

We need to generate a unique SSH key for our second GitHub account.

ssh-keygen -t rsa -C "your-email-address"

Be careful that you don't over-write your existing key for your personal account. Instead, when prompted, save the file as id_rsa_COMPANY. In my case, I've saved the file to ~/.ssh/id_rsa_work.

Step 2 - Attach the New Key

This is a reconstruction of http://www.roman10.net/2011/11/27/how-to-calculate-iptcpudp-checksumpart-2-implementation/ The site is gone so I took it from the archive for the sake of C Programming TCP Checksum's answer Enjoy! All credits go to https://github.com/roman10.

This is a follow up of the previous post, how to calculate IP/TCP/UDP checksum part 1 — theory.

IP Header Checksum Calculation Implementation

To calculate the IP checksum, one can use the code below,

How To Work With Multiple Github Accounts on a single Machine

Let suppose I have two github accounts, https://github.com/rahul-office and https://github.com/rahul-personal. Now i want to setup my mac to easily talk to both the github accounts.

NOTE: This logic can be extended to more than two accounts also. :)

The setup can be done in 5 easy steps:

Steps:

Step 1 : Create SSH keys for all accounts
Step 2 : Add SSH keys to SSH Agent

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

	# Example 1a adapted from https://www.reddit.com/r/gis/comments/4rhvhh/map_automation_arcpymapping_make_lyr/
	#
	# Reference: 1) http://desktop.arcgis.com/en/arcmap/latest/analyze/arcpy-mapping/layer-class.htm
	# 2) https://docs.python.org/2/library/json.html

	import arcpy
	import json

	lyr = # Layer object, typically from arcpy.mapping.ListLayers (arcpy._mapping.Layer)

	git config --global url."https://github.com/".insteadOf [email protected]:
	git config --global url."https://".insteadOf git://

	#!/bin/bash

	remote=origin ; for brname in `git branch -r \| grep $remote \| grep -v /master \| grep -v /HEAD \| awk '{gsub(/^[^\/]+\//,"",$1); print $1}'`; do git branch --track $brname $remote/$brname \|\| true; done 2>/dev/null