None really. I would think if you use Perl, you would probably use the one line from Perl is all. Also sed doesn't have the in place function on Solaris (and AI

None really. I would think if you use Perl, you would probably use the one line from Perl is all. Also sed doesn't have the in place function on Solaris (and AIX) by default I believe. So with Perl, you can do it everywhere.