Added the downsync utility (both Bash and Powershell) to retrieve exported backups.

.utils/downsync/rotatebackups

@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+# Backup folders maintenance operation planned at once a day.
+# This script called usually by the cron (but indirectly).
+# Uses the rotate_folder utility which must be available on path.
+#
+# Author: Kovács Zoltán <kovacsz@marcusconsulting.hu>
+# License: GNU/GPL v3+ (https://www.gnu.org/licenses/gpl-3.0.en.html)
+# 2025-05-20 v0.1 Initial release
+
+# Will maintain child subfolders of this directory.
+# Input parameter (if any) will be sanitized later.
+[[ -n "$1" ]] \
+&& BACKUPSROOT="$1" \
+|| BACKUPSROOT="$PWD"
+	
+# Checks the components.
+[[ -z "$(which dirname)"  ]] && exit 1
+[[ -z "$(which readlink)" ]] && exit 1
+[[ -z "$(which xargs)"    ]] && exit 1
+
+# Where I'm?
+SCRPATH="$( cd -P "$( "$(which dirname)" "$0" )" && echo "$PWD" )"
+
+# Rotates the backup folders.
+#
+# Enumerates the folders and tries to rotate they content.
+for folder in $(ls -1 "$BACKUPSROOT" 2>/dev/null | $(which xargs) -0 ) ""
+do
+    if [ -n "$folder" ]; then
+	# Dereferenced absolute path.
+	folder="$("$(which readlink)" -e "$BACKUPSROOT/$folder")" #"
+	# Does it a folder with a prepared configuration?
+	if [ -d "$folder" -a -r "$folder/.rotate_folder.conf" ]; then
+    	    # Does the rotate job.
+    	    if [ -x "$SCRPATH/rotate_folder" ]; then
+		"$SCRPATH/rotate_folder" -f "$folder" >/dev/null
+    	    elif [ -x "$(which rotate_folder)" ]; then
+		"$(which rotate_folder)" -f "$folder" >/dev/null
+    	    fi
+	fi
+    fi
+done
+#
+# Done with rotating.
+
+# That's all, Folks :)