IFS='
'

#Renomeia apenas diretórios
k=1
QTD=${QTD:-$(ls -d */ | wc -l)}

while [ ${k} -le ${QTD} ];
do
 FULLNAME="$(ls -d */ | head -${k} | tail -1)"
  NEWNAME="$(sed -E 's/^\s*//g;s/\s*$//g;s/\./_/g;s/-\s/_/g;s/\s-/_/g;s/\s/_/g;s/__*/_/g;s/\/$//g;s/^__*//g;s/__*$//g;' <<< "${FULLNAME}")"
  mv "${FULLNAME}" "${NEWNAME}"
 k=$((${k}+1))
done