LeCoupa

/* *******************************************************************************************
 * GLOBAL OBJECTS > ARRAY
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
 * ******************************************************************************************* */


// Global object: properties
Array.length                                         // Reflects the number of elements in an array

// Global object: methods

eashish93

vs Questions

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1. http://stackoverflow.com/questions/804115 (rebase vs merge).
2. https://www.atlassian.com/git/tutorials/merging-vs-rebasing (rebase vs merge)
3. https://www.atlassian.com/git/tutorials/undoing-changes/ (reset vs checkout vs revert)
4. http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See git rev-parse)
5. http://stackoverflow.com/questions/292357 (pull vs fetch)
6. http://stackoverflow.com/questions/39651 (stash vs branch)
7. http://stackoverflow.com/questions/8358035 (reset vs checkout vs revert)

R3V1Z3

Alexa Cheats

Commands, questions and easter eggs for Amazon Alexa enabled devices: https://ugotsta.github.io/alexa-cheats/

General

• "Alexa, stop."
• "Alexa, volume one/six/ten."
• "Alexa, turn up/down the bass/treble."
• "Alexa, mute."
• "Alexa, unmute."
• "Alexa, repeat."

tuannvm

ArgoCD CheatSheet

• ArgoCD CheatSheet
  • Overview
  • Architecture & Components
  • Getting Started
  • Installation & Setup
  • ArgoCD CLI Commands
  • Application Management
• Defining an Application

LeCoupa

docker build -t friendlyname .  # Create image using this directory's Dockerfile
docker run -p 4000:80 friendlyname  # Run "friendlyname" mapping port 4000 to 80
docker run -d -p 4000:80 friendlyname         # Same thing, but in detached mode
docker exec -it [container-id] bash                  # Enter a running container
docker ps                                 # See a list of all running containers
docker stop <hash>                     # Gracefully stop the specified container
docker ps -a           # See a list of all containers, even the ones not running
docker kill <hash>                   # Force shutdown of the specified container
docker rm <hash>              # Remove the specified container from this machine
docker rm $(docker ps -a -q)           # Remove all containers from this machine

davydany

IP Tables (iptables) Cheat Sheet

IPTables is the Firewall service that is available in a lot of different Linux Distributions. While modifiying it might seem daunting at first, this Cheat Sheet should be able to show you just how easy it is to use and how quickly you can be on your way mucking around with your firewall.

Resources

The following list is a great set of documentation for iptables. I used them to compile this documentation.

• How-To Geek: The Beginner’s Guide to iptables, the Linux Firewall: https://www.howtogeek.com/177621/the-beginners-guide-to-iptables-the-linux-firewall/
• IPTables Essentials: Common Firewall Rules and COmmands https://www.digitalocean.com/community/tutorials/iptables-essentials-common-firewall-rules-and-commands

thekeenant

Cheatsheets

• Hyperpolyglot: Side by side comparison of a variety of languages and programming tools.
• Git Cheatsheet, Git Tips/Tricks
• Explainshell: Type a shell command and get an explanation of what it does through showing the docs
• RegExr: A learning tool and a cheat sheet for Regex.

Learning & Practice

• Pramp: Free forever peer-to-peer technical interview practice.
• InterviewBit: Gamified practice for typical coding interview questions.
• Project Euler: Math/CS related challenge problems. Try them and complete them at your own pace.

ricpol

**NOTA IMPORTANTE Questi appunti sono ormai molto datati e incompleti. Li lascio qui per ragioni storiche e affettive, ma davvero, non prendeli alla lettera e non sorprendetevi se ci sono cose sbagliate. Il mio libro Python in Windows parla di tutte queste cose, e di molto altro ancora, in modo più aggiornato, completo e corretto. Vi suggerisco almeno di scaricare il capitolo introduttivo gratuito per farvi un'idea degli argomenti trattati. **

Come installare e usare Python su Windows.

Questi appunti descrivono come installare Python su Windows in modo da creare un ambiente di lavoro sano, facile da usare all'inizio e che possa durare nel tempo senza sfuggirvi di mano quando le cose si fanno più complicate.

Per prima cosa, chiariamo: installare Python su Windows non è per niente complicato di per sé. Potete andare sul sito, scaricare, installare in pochi secondi e cominciare subito a lavorare. All'inizio non avrete difficoltà. Quando prim

sinedied

Introduction to Angular

Angular (aka Angular 2) is a new framework completely rewritten from the ground up, replacing the famous AngularJS framework (aka Angular 1.x).

More that just a framework, Angular should now be considered as a whole platform which comes with a complete set of tools, like its own CLI, debug utilities or performance tools.

Getting started

lukeplausin

# Count total EBS based storage in AWS
aws ec2 describe-volumes | jq "[.Volumes[].Size] | add"
# Count total EBS storage with a tag filter
aws ec2 describe-volumes --filters "Name=tag:Name,Values=CloudEndure Volume qjenc" | jq "[.Volumes[].Size] | add"
# Describe instances concisely
aws ec2 describe-instances | jq '[.Reservations | .[] | .Instances | .[] | {InstanceId: .InstanceId, State: .State, SubnetId: .SubnetId, VpcId: .VpcId, Name: (.Tags[]|select(.Key=="Name")|.Value)}]'
# Wait until $instance_id is running and then immediately stop it again
aws ec2 wait instance-running --instance-id $instance_id && aws ec2 stop-instances --instance-id $instance_id

# Get 10th instance in the account