val scrub_freespace : t -> string -> unit
(** scrub (securely wipe) free space *)
+val mkdtemp : t -> string -> string
+(** create a temporary directory *)
+
+val wc_l : t -> string -> int
+(** count lines in a file *)
+
+val wc_w : t -> string -> int
+(** count words in a file *)
+
+val wc_c : t -> string -> int
+(** count characters in a file *)
+