Copy Files to Web Servers 

my $rsync_cmd = 
    "/usr/bin/rsync -r "                         # recurse into dirs
    . "--delete "                                # propagate deletes
    . "--password-file=$config->{rsync_secret} " # pswd auth
    . "$source_dir/ "                            # from CVS export dir
    . "$config->{rsync_user}\@${hostname}::"
    . "$config->{rsync_target}/htdocs "          # to target
    . "</dev/null";                              # don't prompt for pswd