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Using curl to AWS V4 sign request to AWS_IAM API Gateway endpoint

Small Bash script, calling curl with the --aws-sigv4 option to AWS V4 sign a given request for use with an IAM authorized API Gateway endpoint.

Usage

./aws-api-gateway-iam.sh \
  --request GET \
 "https://api-gateway.mydomain.com/this/route/aws-iam-authz"

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GitHub Markdown cheatsheet

• Blockquote colored/highlighted
• Expand/collapse zone

Blockquote colored/highlighted

> [!NOTE]
> Note.

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macOS execute command upon directory change via launchd

Using launchd to watch a filesystem directory and upon create/change to a file with the directory, execute a command.

Install

For this example:

• Watching directory of: /path/to/watch.
• Upon file change, execute: /path/to/command argument1 argument2.

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Docker volume backup and restore scripts

Backup a Docker volume to tar archive:

$ ./docker-volume-backup.sh \
  DOCKER_VOLUME_NAME \
  ARCHIVE_NAME.tgz

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Node.js strict mode enabled?

A quick test, this relies on the fact that this will not exist and point to the global scope when running in strict mode.

console.log('strict:',(function() { return (this === undefined); })());

Tip

Strict mode is enabled by default within ES module enabled packages.

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Import all GPG keys for GitHub organisation users

Script to fetch a GitHub organisation member list and gpg --import the public GPG key(s) for each member with GPG key(s) associated against their profile.

Requires curl for GitHub API calls, jq for parsing GitHub REST API responses and (obviously) gpg.

Usage

Create a GitHub personal access token (classic or fine-grained) with read access to organisation members:

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root = true

[*]
charset = utf-8
end_of_line = lf
indent_size = 2
indent_style = tab
insert_final_newline = true
trim_trailing_whitespace = true

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{
	"root": true,
	"parserOptions": {
		"sourceType": "module"
	},
	"env": {
		"es2020": true,
		"node": true
	},
	"extends": [

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Python - hashing JSON data structures

A function hash_json(data), accepting a structure loaded from json.load() and computing a hash.

Example

$ ./hashjson.py
Hash a.json: 8212462b8e9ce805cac2f0758127c5cfd7710baf
Hash b.json: 8212462b8e9ce805cac2f0758127c5cfd7710baf

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Install jq on macOS from source

Note: as of jq v1.7 the project offers pre-built native macOS releases for ARM64 based architechtures.

A quick n' dirty Bash script to install the following:

• autoconf.
• automake.
• libtool
• jq - from source.