SSH Command Reference - SSH

Syntax

Host *
  ControlMaster auto
  ControlPath ~/.ssh/sockets/%r@%h-%p
  ControlPersist 600

Parameters	Description	Examples	Level
`ControlMaster`		`ControlMaster auto`	Common
`ControlPath`	socket	`ControlPath ~/.ssh/sockets/%r@%h-%p`	Common
`ControlPersist`	()	`ControlPersist 600`	Common
`-O check`		`ssh -O check user@host`	Advanced
`-O exit`		`ssh -O exit user@host`	Advanced
`-S`	socket	`ssh -S /tmp/ssh-socket user@host`	Advanced

# ~/.ssh/config
Host *
  ControlMaster auto
  ControlPath ~/.ssh/sockets/%r@%h-%p
  ControlPersist 600

, 10

mkdir -p ~/.ssh/sockets
chmod 700 ~/.ssh/sockets

socket

ssh -O check user@server

Master running

ssh -O exit user@server

, New

ControlPath too longsocket, ControlPath, ~/.ssh/s/%r@%h-%p

Control socket connect: Connection refusedsocket, socket : rm ~/.ssh/sockets/user@host-22