Add host-backup script

.bin/host-backup

@@ -0,0 +1,30 @@
+#!/usr/bin/env sh
+
+set -e
+
+_hostname="$(cat /proc/sys/kernel/hostname)"
+_host_backup_file="host-backup-$_hostname"
+if [ -x "$( which "$_host_backup_file")" ]
+then
+	# shellcheck disable=SC1090
+	. "$_host_backup_file"
+else
+	echo "No host-backup file found: $_host_backup_file"
+	exit 1
+fi
+
+if [ -z "$1" ]
+then
+	host_backup_run
+	exit 0
+fi
+
+case "$1" in
+	"_forget")
+		host-backup forget --prune --keep-last 7 --keep-daily 14 --keep-weekly 8 --keep-monthly 8 --keep-yearly 2
+		;;
+	*)
+		restic "$@"
+		;;
+esac
+