From e099e2dbe61e9ad4da9469e7d8d1762019e9de46 Mon Sep 17 00:00:00 2001
From: "Jean (east-high-Nerd)" <jean@easthighnerd.net>
Date: Fri, 11 Jul 2025 19:44:33 -0400
Subject: [PATCH] Initial commit

---
 .gitignore  |  2 ++
 backup.conf |  2 ++
 backup.sh   | 38 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 backup.conf
 create mode 100755 backup.sh

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9782c5b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+backup.conf
+backup-last
diff --git a/backup.conf b/backup.conf
new file mode 100644
index 0000000..02dc615
--- /dev/null
+++ b/backup.conf
@@ -0,0 +1,2 @@
+SOURCE=""
+DEST=""
diff --git a/backup.sh b/backup.sh
new file mode 100755
index 0000000..2132a51
--- /dev/null
+++ b/backup.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+set -euo pipefail
+
+
+BASEDIR="$(dirname ${0} | sed "s|^.|${PWD}|")"
+source "${BASEDIR}/backup.conf"
+TIMESTAMP="$(date +%Y_%m_%d-%H_%M_%S)"
+SNAPSHOT="${SOURCE}@${TIMESTAMP}"
+
+
+sudo zfs snapshot ${SNAPSHOT}
+
+if [[ -f "${BASEDIR}/backup-last" ]]; then
+	BACKUP_LAST="$(cat ${BASEDIR}/backup-last)"
+
+	sudo \
+		zfs \
+			send \
+			-i ${BACKUP_LAST} \
+			${SNAPSHOT} \
+	| \
+	sudo \
+		zfs \
+			receive \
+			${DEST}
+else
+	sudo \
+		zfs \
+			send \
+			${SNAPSHOT} \
+	| \
+	sudo \
+		zfs \
+			receive \
+			${DEST}
+fi
+
+printf "@${TIMESTAMP}" | tee "${BASEDIR}/backup-last" &> /dev/null