sh.zio.backup: add prototyping

usr/local/bin/sh.zio.backup

@@ -88,6 +88,9 @@ function invoke_restic() {
                 --repo "$(cat $restic_repo_file)" \
                 $command $args | tee /dev/fd/3)"
                 
+            echo "------"
+            echo "$restic_out"
+
             if [[ $? == 0 ]]; then
                 break
             else