#ex_13-4
#Learning Perl Appendix A, Exercise 13.4
if ($ARGV[0] eq "-s") { # wants a symlink
    $symlink++; # remember that
    shift(@ARGV); # and toss the -s flag
}
($old, $new) = @ARGV; # name them
if (-d $new) { # new name is a directory, need to patch it up
    ($basename = $old) =~ s#.*/##s; # get basename of $old
    $new .= "/$basename"; # and append it to new name
}
if ($symlink) { # wants a symlink
    symlink($old,$new);
} else { # wants a hard link
    link($old,$new);
}