sh.zio.backup: add prototyping

usr/local/bin/sh.zio.backup

@@ -81,12 +81,15 @@ function invoke_restic() {
 
         while true; do
         	exec 3>&1
-        
+
             restic_out="$("$restic_path" \
                 --cache-dir "$cache_dir" \
                 --password-file "$restic_repo_passwd_file" \
                 --repo "$(cat $restic_repo_file)" \
                 $command $args | tee /dev/fd/3)"
+                
+            echo "------"
+            echo "$restic_out"
 
             if [[ $? == 0 ]]; then
                 break