talarczykco

def maximize_trades(prices, starting_cash=100_000, ticker="ABCD"):
    cash = starting_cash
    shares = 0
    log = []
    n = len(prices)

    for day in range(n):
        today = prices[day]
        tomorrow = prices[day + 1] if day + 1 < n else None

talarczykco

Amazon WorkMail

From Setting up IMAP for Amazon WorkMail:

Configuration	Value
Protocol	SMTPS (SMTP, encrypted with TLS) - not STARTTLS!
Port	465
Username	Amazon WorkMail account
Password	Amazon WorkMail password

talarczykco

#!/bin/bash

# https://gist.github.com/talarczykco/d4cfc9188a061f68880ee5b630a4aeb6
# https://pve.proxmox.com/wiki/Cloud-Init_Support

set -ex

IMGURL=https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img
IMGDIR=etc
IMGFILE=$(basename $IMGURL)

talarczykco

# Created this after googling for:
# - python logging replace handler
# - python logging basicconfig not working
# - python logging getlogger
def get_logger(level='DEBUG'):
    loghandler = logging.StreamHandler()
    logfmt = logging.Formatter(fmt='%(asctime)s:%(name)s:%(levelname)s:%(message)s',
                               datefmt='%Y-%m-%d %H:%M:%S')
    logger = logging.getLogger()    # get root logger, not __name__
    loghandler.setFormatter(logfmt)

talarczykco

This example uses istioctl as the formula, but this may come in handy for kubernetes-cli, kubernetes-helm, etc.

1. Find the formula for your executable, e.g. istioctl, and click on the link to GitHub:

   brew info istioctl | grep Formula
   

2. Click "Blame" button ("History" will be too large to display).
3. Hopefully, you can find an earlier versioned commit message... click on it.
4. Click ... in upper-right of next page, select "View File" from drop-down.
5. Right-click "Raw" button, and Copy URL Address.

talarczykco

From your iOS device, go to Photos, then:

• Select
• Select All
• Share (box w/arrow)
• Save Images
• Save to Camera Roll
• ... then plug your iOS device into your Mac and upload the photos to a known location
• Disable My Photo Stream in settings on all your devices

talarczykco

Creating an EKS Cluster

Configure aws credentials:

brew install awscli
aws configure

Install eksctl and create cluster:

talarczykco

If you use elasticsearch-curator on AWS (or possibly other hosted or self-hosted Elasticsearch installations that use SSL,) and you get this when curating:

elasticsearch.exceptions.ElasticsearchException: Unable to create client connection to Elasticsearch. Error: Root certificates are missing for certificate validation. Either pass them in using the ca_certs parameter or install certifi to use it automatically.

Then make sure the client.use_ssl key is present and True. This is a non-obvious error that led me down a rathole of Googling. Don't bother specifying root certificates, or installing certifi (it's probably already installed, if you installed elasticsearch-curator with pip.)

---
# https://www.elastic.co/guide/en/elasticsearch/client/curator/current/configfile.html
client:

talarczykco

Postfix on macOS

Sierra - 10.12.6

1. Create a new app password in Gmail for Postfix (Optional - this is required only if you have 2-Step Verification enabled.)

2. Edit /etc/postfix/sasl_passwd with your username and app password:

    smtp.gmail.com:587 yourname@gmail.com:CHANGEME
   

talarczykco

rsnapshot on macOS

Install

Run the following:

brew install rsnapshot
sudo perl -MCPAN -e'install Lchown'

Configure