Check folder and sub folder to adapt permissions

test.sh

#!/bin/bash
for file in `find . `
do
permissions=`stat -c %a $file`
if [ $permissions = "660" ]
then
        permissions=664
        echo "Permission 660 trouvée"
else
        permissions=775
        echo "Permission 770 trouvée"
fi
#echo $permissions $file
chmod $permissions $file
done