Rename tmux / byobu windows to ssh hostname

10_update_windows

#!/bin/bash
# for byobu, put this file in ~/.byobu/bin
# then chmod +x
# once that's done, every 10 seconds byobu will run this script
# and rename your windows to either the local host name, or to
# the host a windows is ssh'd into

for i in $(tmux list-windows -F '#{window_index}'); do {

    panenames=$(tmux list-panes -t $i -F '#{pane_title}' | sed -e 's/:.*$//' -e 's/^.*@//' | uniq)
    panepids=$(tmux list-panes -t $i -F '#{pane_pid}' | uniq)
    panecmd=$(ps --ppid $panepids -o cmd= | grep "[s]sh")

    if [[ $panecmd = *"ssh"* ]]; then {
        windowname=$(echo $panecmd | grep "[s]sh" | cut -d @ -f 2)
    } else {
        windowname=$(echo ${panenames} | sed -e 's/ /|/g')
    }; fi
    tmux rename-window -t $i $windowname
}; done