Simon Willison’s Weblog

SSH ControlPath/ControlMaster. How to get OpenSSH v4 and above to re-use an existing SSH connection for multiple sessions, dramatically speeding up connection start times.

Posted 18th December 2006 at 11:53 am

Recent articles

First impressions of Claude Cowork, Anthropic's general agent - 12th January 2026
My answers to the questions I posed about porting open source code with LLMs - 11th January 2026
Fly's new Sprites.dev addresses both developer sandboxes and API sandboxes at the same time - 9th January 2026

nick-burch 2 ssh 8 torchbox 7

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe