Wait 3 seconds and if "q" button doesn't pressed, go to HACKER mode! (good for RPi)

autoexec.sh

#!/bin/bash
tmuv() ( tmux split-window -dv -t $TMUX_PANE "bash --rcfile <(echo '. ~/.bashrc;$*')" )
tmuh() ( tmux split-window -dh -t $TMUX_PANE "bash --rcfile <(echo '. ~/.bashrc;$*')" )

end=$((SECONDS+3))
while [ $SECONDS -lt $end ]; do
    read -t 0.25 -N 1 input
    if [[ $input = "q" ]] || [[ $input = "Q" ]]; then
        exit 0
    fi
done
tmuh htop
tmuv ping 8.8.8.8