Segment to display current ssh host name

[davidshen84]

The hostname segment only shows the hostname of the machine from which the tmux is launched. If I ssh to another host, the hostname won't update.

Do we have a segment to display the ssh host's name?

[xx4h]

Hi @davidshen84,

you're right, hostname segment is just for displaying the hostname of the system the tmux session is running on.
E.g. if you have multiple tmux sessions, running on different systems, you can quickly differentiate between them by the hostname.

We don't have a segment right now for what you want to achieve, but i guess we could try create one. As a first collection of ideas:

1. Get tmux display -p -F "#{pane_current_command}" and check for ssh
2. If we've a ssh command, we get the pid of the pane with tmux display -p -F "#{pane_pid}"
3. Based on that pid we get all the child PIDs like ps --no-headers --ppid=PANE_PID -o pid,comm and parse out the ssh PID
4. We retrieve information about the ssh connection with ps --no-headers -q SSH_PID -o args and parse out some information like remote address (e.g. we could reverse lookup), etc.

To get the hostname from inside the remote ssh host itself could be a bit of a challenge though.