add key files to be specified on the command line

show_fingerprints.pl

@@ -16,6 +16,8 @@ my ($version, $has_E)= get_ssh_version();
 my $hash_algorithm= 'MD5';
 
 my @files= <*.pub>;
+push @files, @ARGV if (@ARGV);
+
 # print "files: ", join (' ', @files), "\n";
 push (@files, <authorized_keys*>);