### 1. Find and remove empty files/directories
find ./ -type f -empty
find ./ -type d -empty
find ./ -type f -size 0 -delete
find ./ -type d -empty -delete
### 2. [Mounting a new hdd](https://medium.com/@sh.tsang/partitioning-formatting-and-mounting-a-hard-drive-in-linux-ubuntu-18-04-324b7634d1e0)
sudo fdisk -l
sudo parted /dev/sdb <- if this is the new hdd installed
(parted) mklabel gpt
(parted) mkpart primary 0GB 4GB
quit
sudo mkfs.ext4 /dev/sdb
! temporary mount:
sudo mkdir /mnt/sdb
sudo mount /dev/sdb /mnt/sdb
! Auto mount after reboot
nano /etc/fstab
/dev/sdb /mnt/sdb ext4 defaults 0 0
! Change partition permission
sudo chown <user>:<group> /mnt/sdb -Rcat ~/.ssh/id_rsa.pub | ssh @ 'cat >> .ssh/authorized_keys && echo "Key copied"'