what does this script do?

Question

#!/bin/bash
RYD=/share
FILESPEC=*.sh
DIRPERM=700
FILEPERM=750
OWNER=user:group
CH_FSPEC=0
if [ -d $RYD ]; then
  find $RYD -type d | xargs chmod $DIRPERM
  if [ $CH_FSPEC -gt 0 ]; then
    find $RYD -type f | xargs chmod $FILEPERM
  else
    find $RYD -type f | grep -v "$FILESPEC" | xargs chmod $FILEPERM
  fi
  chown -R $OWNER $RYD
  for SCRIPT in $RYD/$FILESPEC; do
    if [ -x $SCRIPT ]; then
      echo "Executing : $SCRIPT"
      . $SCRIPT
    fi
  done
else
  echo "ERROR! The directory doesn't exist."
  exit 1
fi
exit 0