hobson

# Install python and some binary-dependencies from source in the user directory
# useful for Django webapps on shared hosts like Dreamhost

# BerkelyDB v 4.8 is supported by python 2.7 but not 5.3
# In addition, the bsddb module was deprecated in Python 2.6 and will be removed in 3.0
# So all this BDB stuff isn't useful, but does no harm
# linuxfromscratch.com has patch that can make python 2.7 work with BerkelyDB, if you need it
BDBVER=5.3.21
BDBVE=5.3
export LDFLAGS="-L$HOME/local/lib -L$HOME/local/BerkeleyDB.$BDBVE/lib"

hobson

# install pip & virtualenv
# create a virtual environment for your webapp
# install django in the new virtualenv

cd ~/tmp
PYVE=2.7
PYVER=2.7.3
STVER=0.6c11
# go directly to the source to get the latest and greatest
wget http://pypi.python.org/packages/$PYVE/s/setuptools/setuptools-$STVER-py$PYVE.egg#md5=fe1f997bc722265116870bc7919059ea

nooodl

Introduction
============

Futoshiki (不等式, meaning “inequality”) is a Japanese logic puzzle similar to
Sudoku and the like. Numbers from 1 to n must be placed on an n-by-n grid
(which usually already contains some values) such that each row and each column
is a permutation of `[1..n]`. Additionally, less-than or greater-than signs are
placed between cells, constraining their mutual ordering.

An example puzzle looks like this:

bishboria

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

drmalex07

README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

samsch

Stop using JWTs!

TLDR: JWTs should not be used for keeping your user logged in. They are not designed for this purpose, they are not secure, and there is a much better tool which is designed for it: regular cookie sessions.

If you've got a bit of time to watch a presentation on it, I highly recommend this talk: https://www.youtube.com/watch?v=pYeekwv3vC4 (Note that other topics are largely skimmed over, such as CSRF protection. You should learn about other topics from other sources. Also note that "valid" usecases for JWTs at the end of the video can also be easily handled by other, better, and more secure tools. Specifically, PASETO.)

A related topic: Don't use localStorage (or sessionStorage) for authentication credentials, including JWT tokens: https://www.rdegges.com/2018/please-stop-using-local-storage/

The reason to avoid JWTs comes down to a couple different points:

• The JWT specification is specifically designed only for very short-live tokens (~5 minute or less). Sessions

moreati

Host rpi1
    HostName raspberrypi1.local
    User pi

Host rpi2
    HostName raspberrypi2.local
    User pi

pesterhazy

This gist lists challenges you run into when building offline-first applications based on IndexedDB, including open-source libraries like Firebase, pouchdb and AWS amplify (more).

Note that some of the following issues affect only Safari. Out of the major browsers, Chrome's IndexedDB implementation is the best.

Backing file on disk (WAL file) keeps growing (Safari)

When this bug occurs, every time you use the indexeddb, the WAL file grows. Garbage collection doesn't seem to be working, so after a while, you end up with gigabytes of data.

Random exceptions when working with a large number of indexeddb databases (Safari)

Maks3w

EC2 Instance Connect meets AWS Session Manager via SSH

Both things have been introduced recently, and let you access even private ec2 instances

1. Without VPN
2. No open SSH port
3. Authentication / Authorization is fully delegated to IAM

# Assumes valid AWS Credentials in ENV

betafcc

from __future__ import annotations

from typing import (
    Any,
    Awaitable,
    Callable,
    Iterable,
    Literal,
    Mapping,
    ParamSpec,