opendir( DIR, $targetdir ) || die $!;
    my @files = grep{ /\.sf$/ } readdir( DIR );

    ## do interesting stuff with @files

##</code><code>##

   ## when passing something like *.pl, make sure
   ## to single quote it so that the shell doesn't
   ## automatically expand it:
   ##
   ##    scrip.pl '/foo/bar/*.pl'
   ##
   my @entries = <$ARGV[0]>;