alternative but not implemented method for version checking

show_fingerprints.pl

@@ -58,6 +58,14 @@ sub get_ssh_version
     elsif ($l eq '       ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]') { $has_E= 1; }
   }
 
+  if ($version eq 'unknown')
+  {
+    my @cmd2= qw(ssh -V); # let's try this ...
+    my $res2= `@cmd2 2>&1`;
+    print "res2=[$res2]\n";
+    # TODO: figure out how to match that ...
+  }
+
   ($version, $has_E);
 }