cours/upterm.md

alias

alias
share terminal via ssh live remote terminal sharing

up::terminal commandes, ssh title::"command line live sessions (multiple users on the same command line)" usage::"upterm (host|...)" #s/informatique/unix

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When starting the host (with upterm host) you get the url for web connexion, and the command for ssh connexion.

Connecting to a session

ssh does not support rsa by default now

Advanced Usage

command at startup

• run command at startup : pass it as argument
  • upterm host -- tmux new -t pair-programming (new tmux session)
• force every new connexion to run a command : --force-command parameter
  • upterm host --force-command 'tmux attach -t pair-programming' (connect everyone to a tmux session)

[!example] Example : tmux setup for remote pair programming

• the host creates a new session, remote
• Every client creates a new session attached to the host sesstion, remote
• [p] That allows everyone to see the same session, but to be able to switch between panes and tabs independently.

$> upterm host --force-command 'tmux new -t remote' -- tmux new -t remote

The problem with ssh and rsa

• ssh doesn't support rsa algorithm anymore
• that means upterm won't work

Workaround :

• Add the public key of the person that wants to connect to the .ssh/authorized_hosts
  • generate with ssh-keygen
• Use these arguments (to connect) :
  • ssh <the_hostname>@uptermd.upterm.dev -o "PubkeyAcceptedKeyTypes +ssh-rsa" -o "HostKeyAlgorithms +ssh-rsa"
    • <the_hostname> is given by upterm host