================ SSH ================

Escape Sequences

~? (tilde question mark) displays the escape sequences. Notably, ~. kills the connection (eg, if the other end has hung), and ~^Z backgrounds the shell (so you can mess around locally).


To “reuse” a single SSH connection between multiple shells/pipes/scp::

ControlPath ~/.ssh/master-%l-%r@%h:%p
ControlMaster auto

Enable compression over remote connections with fast machines::

Compression yes

SSH Key Agent Timeout

ssh-agent has an argument (-t) to timeout private keys. You’ll need to enable this flag in your X initialization file somewhere… on Ubuntu it seems to be in /etc/X11/Xsession.d/90x11-common_ssh-agent (set SSHAGENTARGS='-t 6h' for six hour timeout).