telnet

:~> telnet 192.168.2.15 2323
Trying 192.168.2.15...
Connected to 192.168.2.15.
Escape character is '^]'.

Welcome to the Mer/SailfishOS Boat loader debug init system.

Log so far is in /init.log

To make post-switch_root halt before starting systemd, perform:
  touch /init_enter_debug2
(When run post-switch_root, telnet is on port 2323, not 23)

sh-3.2#