# TIL (Today I Learned)

Short posts of things I learned during the course of the day in the spirit of learning in public (opens new window). Not quite fully-fledged blog posts with brief contexts and one or two examples.

2025

If your phone fell in water, put it in...different water? Oct 16

electronics

2024

AWS VPC IPAM error: The allocation size is too big for the pool Dec 02

git

2023

TIL: How to find Lambda functions with clear-text sensitive keys using Steampipe Nov 17

workawslambdasteampipe
EC2 IAM Condition Keys - ec2:MetadataHttpTokens vs ec2:Attribute/HttpTokens Oct 16

awsec2iam
Would AWS Cloudformation StackSets automatically apply to new accounts? Apr 11

aws
iPython Startup Scripts Mar 14

ipythonpython
AWS Multi-Account Best Practices Feb 21

aws
How to prevent concurrent jobs in Gitlab pipelines Jan 05

gitlab

2022

How to draw vertical lines on a Datadog graph Mar 10

datadog
How to create a factory for a Django model with a password Mar 01

python
How to print Zeep raw requests and responses Feb 17

python

2021

Always write a SELECT WHERE query first Nov 10

sql
How to view network usage in Ubuntu using vnstat Aug 03

linux
Celery with RabbitMQ broker ping hanging Jun 22

rabbitmqcelerypython
How to convert between dates and seconds since the Unix Epoch in Bash Jun 10

bashlinux
How to generate a pie chart of event types in Cloudwatch Jun 07

aws
How to check why your EC2 instance was killed using AWS CloudTrail Jun 04

aws
How to filter CloudWatch logs using Python May 28

awspython
Define a bash command to open a daily notes file Jan 10

bash
Creating a Python dict with the dict() syntax Jan 08

python
How to record and play audio in Ubuntu's terminal Jan 06

linuxaudio

2020

Python subtests Nov 22

pythontesting
Where 'foo' and 'bar' actually comes from Nov 21

dev-culture
Including code blocks from files in Vuepress Nov 16

vuepressfrontendmarkdown
Sorting a list by a priority list in Python Nov 13

pythonbackend
React Router's <Switch> component Nov 08

reactjavascript
Javascript optional chaining operator (?.) Nov 06

javascript
Linux true false Oct 12

linux
Using rsync to push code to a server Sep 25

linux
Git push URLs for pushing your repository to multiple remotes Sep 23

git

Thank you for reading my blog! If you enjoyed this post, you're welcome to subscribe via RSS here (opens new window).