rmoorman

#!/usr/bin/env bash

DATABASE_URL="postgres://MyPostgresUser:[email protected]:5432/MyPostgresDB"

# `cut` is used to cut out the separators (:, @, /) that come matched with the groups.

DATABASE_USER=$(echo $DATABASE_URL | grep -oP "postgres://\K(.+?):" | cut -d: -f1)
DATABASE_PASSWORD=$(echo $DATABASE_URL | grep -oP "postgres://.*:\K(.+?)@" | cut -d@ -f1)
DATABASE_HOST=$(echo $DATABASE_URL | grep -oP "postgres://.*@\K(.+?):" | cut -d: -f1)
DATABASE_PORT=$(echo $DATABASE_URL | grep -oP "postgres://.*@.*:\K(\d+)/" | cut -d/ -f1)

rmoorman

Anti-hype LLM reading list

Goals: Add links that are reasonable and good explanations of how stuff works. No hype and no vendor content if possible. Practical first-hand accounts and experience preferred (super rare at this point).

My own notes from a few months back.

Background

• Survey of LLMS
• Self-attention and transformer networks

rmoorman

[MASTER]
profile=no
persistent=yes
ignore=tests.py, urls.py, migrations
cache-size=500

[MESSAGES CONTROL]
# C0111 Missing docstring
# I0011 Warning locally suppressed using disable-msg
# I0012 Warning locally suppressed using disable-msg

rmoorman

# -*- coding: utf-8 -*-
# code is in the public domain
# (c) 2012 Thomas Güttler http://www.thomas-guettler.de/
#
# http://djangosnippets.org/snippets/2691/
# myapp/management/commands/update_primary_key.py
u'''

Management command to update a primary key and update all child-tables with a foreign key to this table.

rmoorman

; FIXME: The grammar has been transformed so that `w` appears after a
; token, but there is no way in ABNF to define it as token-separator
; that can optionally contain a mix of comments and white-space. Take
; `;;` as an example, for that to match `sql-stmt-list` `w` would
; have to match the empty string. But if `w` matches the empty string
; then `ISNOT` is the same as `IS NOT`.

sql-stmt-list = [ sql-stmt ] *( ";" w [ sql-stmt ] )
sql-stmt = [ "EXPLAIN" w [ "QUERY" w "PLAN" w ] ] ( alter-table-stmt / analyze-stmt / attach-stmt / begin-stmt / commit-stmt / create-index-stmt / create-table-stmt / create-trigger-stmt / create-view-stmt / create-virtual-table-stmt / delete-stmt / delete-stmt-limited / detach-stmt / drop-index-stmt / drop-table-stmt / drop-trigger-stmt / drop-view-stmt / insert-stmt / pragma-stmt / reindex-stmt / release-stmt / rollback-stmt / savepoint-stmt / select-stmt / update-stmt / update-stmt-limited / vacuum-stmt )
alter-table-stmt = "ALTER" w "TABLE" w [ schema-name w "." w ] table-na

rmoorman

#!/bin/bash

ip=`echo $SSH_CONNECTION | cut -d " " -f 1`
hostname=`hostname`
fqdn=`hostname -f`

logger -t ssh-wrapper $USER login from $ip

sendmail -t <<EOF
To: Alex <[email protected]>

rmoorman

#!/usr/bin/ruby
# chkconfig: 35 99 01
# description: EC2 DNS registration
# processname: ec2hostname

require 'aws-sdk'
require 'net/http'

`touch /var/lock/subsys/ec2hostname`

rmoorman

#!/usr/bin/ruby
# chkconfig: 35 99 01
# description: EC2 DNS loadbalancing
# processname: ec2hostname

require 'aws-sdk'
require 'net/http'

`touch /var/lock/subsys/ec2hostname`

rmoorman

AWS CLI command to update CNAME

When you have a set of application servers running in EC2 in an active/passive configuration, the easiest way to failover is to simply update the DNS to point to the second server as soon as it's available to serve requests. If you are using Route 53 to manage your DNS configuration, with the AWS CLI you can make this change in a single command.

Initial Setup

• Install the AWS CLI
• Login with an account that has an IAM Policy that gives it access to the Route53 Service
• Get the HostedZoneID for the domain you want to update from the AWS console here: https://console.aws.amazon.com/route53/home#hosted-zones:

The CLI expects the change to be submitted via a JSON-formatted configuration file. I've inclu

rmoorman

defmodule YourApp.Validators.Email do
  use Ecto.Changeset
  @mail_regex ~r/^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/
  # ensure that the email looks valid
  def validate_email(changeset, field) do
    changeset
    |> validate_format(field, @mail_regex)
  end 
end