UniIsland

#!/bin/bash

## List all manually installed packages on a debian/ubuntu system
## manually installed means:
##   1. not pre-installed with the system
##   2. not marked auto-installed by apt (not dependencies of other
##      packages)
## Note: pre-installed packages that got updated still needs to be
##   filtered out.

nz

HMAC over Basic Auth

This is a pattern I use fairly frequently for administrative APIs. It's a sort of OAuth lite for non-public APIs that produces good quality tokens. Once you build it a few times, it's not any harder than using arbitrary basic auth in your APIs.

The client and the app share a secret, which is never transmitted across the wire. The client uses this secret to create an HMAC digest of a payload consisting of the current time and a random nonce value. The nonce is provided as the Basic Authorization user, and the resulting HMAC digest is provided as the Basic Authorization password.

A similar process is followed on the server side. The server uses the supplied nonce, its own time, and its own copy of the shared secret. It may want to check against several tokens across a small window of times to account for clock drift.

• Using HMAC means the secret is never transmitted across the wire. Theoretically these are safe across plaintext connections, but you're using TLS anyway, right?
• The i

dcode

Commands to check various states of Kafka

NOTE: Code blocks indicate input on prompt with a '$'. Everything else is output

Create a new topic

$ /opt/kafka/bin/kafka-topics.sh --topic my_topic --zookeeper localhost:2181 --create --partitions 1 --replication-factor 1
Created topic "my_topic".

kentcdodds

A beginner's guide to ASTs

This is for my talk A beginner's guide to ASTs for JS Remote Conf 2016.

1. Explore the AST
2. Initial Star Wars names Transform setup
3. Star Wars names Transform complete
4. ESLint Plugin Example

kelseyhightower

A Gopher Rising

Inspired by Maya Angelou's Still I Rise

You may walk through my GitHub history,
With it’s non idiomatic and fragal lines,
You may value me less than dirt,
But still, like dust, I’ll rise.

psxvoid

#!/bin/sh
# based on https://gist.github.com/ipedrazas/9c622404fb41f2343a0db85b3821275d

# delete all evicted pods from all namespaces
kubectl get pods --all-namespaces | grep Evicted | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod

# delete all containers in ImagePullBackOff state from all namespaces
kubectl get pods --all-namespaces | grep 'ImagePullBackOff' | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod

# delete all containers in ImagePullBackOff or ErrImagePull or Evicted state from all namespaces