sh.zio.backup: prototyping

usr/local/bin/sh.zio.backup

@@ -175,8 +175,14 @@ function invoke_script() {
     export restic_path
     export secrets_dir
 
-    "$backup_scripts_dir/$backup_script_filename"
+	set -o pipefail
+	exec 3>&1
+
+    script_output=$("$backup_scripts_dir/$backup_script_filename" 2>&1 | tee /dev/fd/3)
     echo "$?"
+
+    set +o pipefail
+    exec 3>&-
 }
 
 function backup_files() {