Append the following line to it: `session optional pam_exec.so seteuid /path/to/ssh_login.sh`.
This will make the script be run every single time someone authenticates through SSH and also not block login if
-the script is not absent.
+the script is absent.
Just to be sure, keep your current SSH session and alive and try opening a second one. If everything is done
correctly, you should have a notification on your phone (or desktop if you subscribed on it as well).