s3cmd-limit-subfolder-total.sh

# arg1 : bucket
# arg2 : max sub folders / days

total=`s3cmd ls s3://$1/ | wc -l`

# remove old folders if move then max
if [ "$total" -gt "$2" ]
  then
  # clean up s3 backups 
  s3cmd ls s3://$1/ | while read -r line;
    do
      createDate=`echo $line|awk {'print $1" "$2'}`
      folder=`echo $line|awk {'print $2'}`
      folderDate=`echo $folder|awk -F\/ {'print $5'}`
      createDate=`date -d"$folderDate" +%s`
      olderThan=`date -d"-$2 days" +%s`
      
      if [[ $createDate != "" && $createDate -lt $olderThan ]]
        then 
          if [[ $folder != "" ]]
            then
              folder=${folder:0:-1}
              s3cmd del --recursive "$folder"
              echo "Deleted $folder"
          fi
      fi
    done;
fi