This repository contains a simple shell script for making a linux snapshot. For now, the script only tested in system with this specification:

• Init system: systemd
• Bootloader: systemd-boot (formerly known as gummiboot)

For those who use different init system and bootloader, you might want to change the restore() shell function.

To make it more POSIX compliant, the script run on dash rather than bash or sh. If you does not have dash installed, you might want to change the shebang (#!/bin/dash).

The script using mount command to mounting different partition for the backup partition, so we need root privilege and make sure you have separate partition for backup. Here's an example of running the script using sudo (assuming we are in the same directory as the script):

sudo ./rsync-snapshot backup

By default, the script mount the backup partition into root home directory /root/backup. If you want to change this, you need to change this in the script and also make sure the directory where you mount the backup partition exist in exclude.list file to prevent recursive backup.

The script using --mkdir for mount command, if you got an error after message Mounted /dev/... at ..., you might want to remove the flag and create the backup directory manually.

To print the script usage, we can run the script without any arguments, like this:

sudo ./rsync-snapshot

To check the backup partition, we can use lsblk command.

• Easy Automated Snapshot-Style Backups with Linux and Rsync.
• Arch wiki rsync.