Andrey Katamanov regme

Claude Code Multi-Account Auth Switcher

Switch between multiple Claude Code subscriptions (personal / work / API key) on macOS using Keychain.

Lightweight alternative (~80 lines of bash) to heavier solutions. No dependencies beyond Python 3 and macOS security CLI.

How it works

Three pieces:

OpenVPN .ovpn manipulation.

This is how you can take an OpenVPN .ovpn config file and extract the certificates/keys required to import the profile into NetworkManager.

Download the .ovpn file. Save it somewhere you can store it permanently (I use ~/.vpn).
Copy from between <ca> tags into ca.crt, remove <ca> tags.
Copy from between <cert> tags into client.crt, remove <cert> tags.
Copy from between <key> tags into client.key, remove <key> tags.
Copy from between <tls-auth> tags into ta.key, remove <tls-auth> tags.
Remove the line "key-direction 1"
Above "# -----BEGIN RSA SIGNATURE-----" insert the following lines.

Enable Docker Remote API with TLS client verification

Docker's Remote API can be secured via TLS and client certificate verification.
First of all you need a few certificates and keys:

CA certificate
Server certificate
Server key
Client certificate
Client key

Create certificate files

# Delete all containers
docker rm $(docker ps -aq)
# Delete all images
docker rmi $(docker images -q)
# Delete all untagged images
docker rmi $(docker images -q --filter "dangling=true")

References:

Run commands on remote Docker host

This is how to connect to another host with your docker client, without modifying your local Docker installation or when you don't have a local Docker installation.

Enable Docker Remote API

First be sure to enable the Docker Remote API on the remote host.

This can easily be done with a container.
For HTTP connection use jarkt/docker-remote-api.
For HTTPS connection use whiledo/docker-remote-api-tls.

$/
  artifacts/
  build/
  docs/
  lib/
  packages/
  samples/
  src/
 tests/

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	# use https://github.com/lambci/docker-lambda to simulate a lambda environment
	docker run -it --rm --entrypoint bash -e ODBCINI=/opt/odbc.ini -e ODBCSYSINI=/opt/ lambci/lambda:build-python3.7

	# download and install unixODBC
	# http://www.unixodbc.org/download.html
	curl ftp://ftp.unixodbc.org/pub/unixODBC/unixODBC-2.3.7.tar.gz -O
	tar xzvf unixODBC-2.3.7.tar.gz
	cd unixODBC-2.3.7

	./configure --sysconfdir=/opt --disable-gui --disable-drivers --enable-iconv --with-iconv-char-enc=UTF8 --with-iconv-ucode-enc=UTF16LE --prefix=/opt

	// Restify Server CheatSheet.
	// More about the API: http://mcavage.me/node-restify/#server-api
	// Install restify with npm install restify


	// 1.1. Creating a Server.
	// http://mcavage.me/node-restify/#Creating-a-Server


	var restify = require('restify');

	function Install-VisualStudio
	{
	[CmdletBinding()]
	param (
	[string] $ImagePath,
	[string[]] $ArgumentList,
	[string] $InstallPath,
	[string] $ProductKey
	)
	Write-Verbose "Install Visual Studio 2012..."