bak

#!/bin/sh
# vi:et lbr noet sw=2 ts=2 tw=79 wrap
# SPDX-FileCopyrightText: 2016-2025 David Rabkin
# SPDX-License-Identifier: 0BSD
#
# Makes incremental backups from the first parameter to the second.
# shellcheck disable=SC1091,SC2034 # File not following, appears unused.
readonly \
	BASE_APP_VERSION=0.9.20250609 \
	BASE_MIN_VERSION=0.9.20231212
. base.sh
[ "$#" -eq 2 ] || die bak: try bak [source directory] [destination directory]
readonly \
	DST="$2" \
	SRC="$1"
validate_cmd rdiff-backup
isreadable "$SRC" || die "$SRC" is not readable.
iswritable "$DST" || die "$DST" is not writable.
{
	rdiff-backup \
		--force \
		--preserve-numerical-ids \
		--print-statistics \
		--terminal-verbosity 4 \
		"$SRC" "$DST" \
		2>&1 1>&3 3>&- | tologe
} \
	3>&1 1>&2 | tolog