Update sed line
Update sed line

Source: http://www.dd-wrt.com/phpBB2/viewtopic.php?p=289367#289367
Post Author: frater
Post Date: Apr 16, 2009 19:00

or even better..
  echo -n "${data}" |  sed -e 's/[$`"\]/\\&/g' | tee -ia  ${TO_ALL} >> ${bfile}

WolverineFan/dd-wrt.backupessential