Add custom system-wide scripts

root/usr/local/bin/incremental-backup

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# Script to perform incremental backups using rsync
+# It is often ran as crontab rule for automated backup solution
+#
+# This script will respect .rsync-filter files, which can be used
+# to define custom exclude rules for files/dirs in which it is present
+
+if [ $# -lt 2 ]; then
+	echo "Invalid amount of arguments passed!"
+	echo "Arguments: [Source path] [Backup path]"
+	echo "  Source path: directory to be backed up, usually '/'"
+	echo "  Backup path: directory to back up to (destination), usually mounted drive"
+	exit
+fi
+
+SOURCE_DIR="$1"
+BACKUP_DIR="$2"
+DATETIME="$(date '+%Y-%m-%d_%H:%M:%S')"
+BACKUP_PATH="${BACKUP_DIR}/${DATETIME}"
+LATEST_LINK="${BACKUP_DIR}/latest"
+
+mkdir -p "$BACKUP_DIR"
+
+rsync -avHAXS \
+	--delete \
+	--filter='dir-merge /.rsync-filter' \
+	--link-dest "${LATEST_LINK}" \
+	"${@:3}" "${SOURCE_DIR}/" "${BACKUP_PATH}"
+
+# Only attempt to override the symlink if we made new backup_path
+# user might've passed --dry-run option in which case we wouldn't
+# want to override latest symlink to non-existent location
+if [ -d "${BACKUP_PATH}" ]; then
+	rm "${LATEST_LINK}" 2>/dev/null
+	ln -s "${BACKUP_PATH}" "${LATEST_LINK}"
+fi