Bash script used to setup home directory encryption on Ubuntu 18.04 LTS using fscrypt

fsencrypt.sh

#!/bin/bash

# Script based on tutorial
# http://tlbdk.github.io/ubuntu/2018/10/22/fscrypt.html

if [[ "$EUID" -ne 0 ]]; then
    echo "[!] Sorry this script need to be run as root."
    exit 1
fi

function usage {
    echo "Description:"
    echo "This tool is used to encrypt specific user home directory"
    echo "You could use it to encrypt all in one pass with --all flag"
    echo ""
    echo "Note:"
    echo "You should AVOID using this tool while connected to any graphical interface."
    echo "Unexpected behaviours might happen while copying use directory if connected to GUI."
    echo ""
    echo "Usage:"
    echo "$0 [user | --all]"
    echo ""
}

# Print Usage if nothing is set as user
if [[ -z $1 ]]; then
    usage
    exit 1
elif [[ "$1" == "--all" ]]; then
    # Get list of all users
    cd /home
    USERS=( */ )
else
    if [[ ! -d /home/$1 ]]; then
        echo '[!] This user does not have home directory. Make sure it exists.'
        exit 1
    fi
    # Store user as unique entry in array
    USERS=($1)
fi

echo '..:: Home Directory encryption tool ::..'

# Setup var 
DEVICE=$(df | grep -E '/$' | awk '{print $1}')
echo "[+] We will work on ${DEVICE} partition"

# Check block size are identical
if [[ $(getconf PAGESIZE) -eq $(tune2fs -l $DEVICE | grep 'Block size' | awk '{print $3}') ]]; then
    echo '[+] Block size is identical, keep going...'
else
    echo '[!] Block size does not appear to be identical, abort encryption!'
    exit 1
fi

echo '[+] Install required libs'
apt -qq -y install fscrypt libpam-fscrypt

# Install PAM encrypt module if first time
if [[ ! -f /usr/share/pam-configs/keyinit-fix ]]; then
    echo '[+] Setup PAM encrypt module'
    tee /usr/share/pam-configs/keyinit-fix > /dev/null <<EOT
Name: keyinit fix
Default: yes
Priority: 0
Session-Type: Additional
Session:
    optional    pam_keyinit.so force revoke
EOT
    echo '[+] Reconfigure PAM'
    pam-auth-update --package

    echo '[+] Re-Configure fscrypt'
    fscrypt setup --force
fi

# Run encryption mode based on login passphrase for each user
for usr in "${USERS[@]%*/}"; do
    echo "[+] Encrypt ${usr} home directory"
    mv /home/${usr} /home/${usr}.bak
    mkdir /home/${usr}
    chown ${usr}.${usr} /home/${usr}
    fscrypt encrypt /home/${usr} --user=${usr} --source=pam_passphrase
    rsync -avH --info=progress2 --info=name0 /home/${usr}.bak/ /home/${usr}/
    rm -rf /home/${usr}.bak
done

echo "[+] All done."
exit 0

Nice to see that this still works !!
Thanks ! ;)