stekern

# /// script
# requires-python = ">=3.12"
# dependencies = [
#     "boto3"
# ]
# ///
from __future__ import annotations

import argparse
import base64

stekern

# ====== Options ======
setopt NO_CASE_GLOB
setopt SHARE_HISTORY
setopt EXTENDED_HISTORY
setopt APPEND_HISTORY
setopt HIST_VERIFY
setopt HIST_EXPIRE_DUPS_FIRST
setopt HIST_IGNORE_DUPS
setopt HIST_FIND_NO_DUPS
setopt HIST_REDUCE_BLANKS

stekern

AWSTemplateFormatVersion: "2010-09-09"
Description: Creates a Step Functions State Machine that is executed when new items are added to a DynamoDB Table.
Resources:
  Table:
    Type: "AWS::DynamoDB::Table"
    Properties:
      AttributeDefinitions:
        - AttributeName: "PK"
          AttributeType: "S"
      KeySchema:

stekern

#!/usr/bin/env bash
#
# Utility script for creating an empty GitHub dependency graph snapshot for a given <detector>-<job-correlator> combination.
# This can be useful to update your dependency graph in GitHub if you've used Syft or similar to manually publish
# dependency graph snapshots for artifacts that have been removed from the codebase.
#
# The script asks for confirmation before actually making the POST request to GitHub's Dependency Submission API.

set -euo pipefail
IFS=$'\n\t'

stekern

shell stuff

A dumping ground for shell commands and regular expressions that should be POSIX-compliant and portable, as well as some bash stuff that should be portable across bash versions (>= 2).

bash

Storing output from command as array

read -r -d '' -a arr < <( command && printf '\0' )

stekern

#!/usr/bin/env bash
#
# Script that uses the AWS CLI to list all active CloudFormation stacks
# in all enabled regions.
#
set -euo pipefail
IFS=$'\n\t'

regions="$(aws account list-regions --region-opt-status-contains "ENABLED" "ENABLED_BY_DEFAULT" --query "Regions[].[RegionName]" --output text && printf '\0')"
read -r -d '' -a regions < <(aws account list-regions --region-opt-status-contains "ENABLED" "ENABLED_BY_DEFAULT" --query "Regions[].[RegionName]" --output text && printf '\0')

stekern

# NOTE: In order for IAM users and roles to have access to AWS billing and cost management,
# you'll first need to activate IAM access using your AWS root user. You can follow the guide
# at the link below if you haven't already configured this.
# https://docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_billing.html?icmpid=docs_iam_console#tutorial-billing-step1

AWSTemplateFormatVersion: 2010-09-09
Description: |
  Creates an AWS Budgets Budget that notifies you by email once you're on track to exceed the monthly budget."
Parameters:
  Email:

stekern

#!/usr/bin/env bash
#
# Experimental shell script for downloading files from S3 and
# skipping local files with the same filenames.
#
# Example usage: bash shell.sh --bucket-name "my-bucket" --target-dir "./my-local-dir" --prefix "my-prefix/" --flatten "true"

set -euo pipefail
IFS=$'\n\t'

stekern

#!/usr/bin/env bash
#
# Helper functions for replacing placeholders in files.
#
# Distributed under terms of the MIT license.

set -euo pipefail
IFS=$'\n\t'

# Print example usage of the script.

stekern

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

read -r -d '' -a regions < <(aws ec2 describe-regions --query "Regions[].[RegionName]" --output text && printf '\0')

for region in "${regions[@]}"; do
  echo "[$region] Finding CloudFormation stacks deployed using CDK"
  read -r -d '' -a stacks < <(aws cloudformation list-stacks --region "$region" --query "StackSummaries[?!contains(keys(@), 'DeletionTime')].[StackName]" --output text && printf '\0')
  test -z "${stacks:-}" && continue