Tarsnap

Setup

create tarsnap key file in root folder.
So there will be a /root/ folder with the key in there.
For Mac this is problematic while / is read-only, thus: create a /etc/synthetic.conf

root    Users/username/tarsnap

Then reboot and the folder and its link wil be made.

List

sudo tarsnap --list-archives | sort

Delete

sudo tarsnap -d -f <filename>

Backup script

backupscript.sh

#!/bin/sh
/usr/local/bin/tarsnap -c \
        -f "$(uname -n)-$(date +%Y-%m-%d_%H-%M-%S)" \
        /Users/username/dirToBackup

Dry run

for file size check