Open a reusable control connection for later sessions.
Section: Connection Multiplexing
Start a master connection
bash
bash
ssh -M -S ~/.ssh/cm-%r@%h:%p user@example.comExplanation
Open a reusable control connection for later sessions.
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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing Connection Multiplexing
Enable connection persistence
Keep a master connection alive in the background.
Request forwarding changes on master
Add or adjust forwarding via an existing master connection.