--- hpn-ssh-hpn-18.4.2/contrib/hpnssh-copy-id.orig
+++ hpn-ssh-hpn-18.4.2/contrib/hpnssh-copy-id
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 # Copyright (c) 1999-2023 Philip Hands <phil@hands.com>
 #               2021 Carlos Rodríguez Gili <carlos.rodriguez-gili@upc.edu>