Variable: dired-mark-prefix
dired-mark-prefix is a variable defined in dired-aux.el.gz.
Value
""
Documentation
Prepended to marked files in Dired shell commands.
Source Code
;; Defined in /usr/src/emacs/lisp/dired-aux.el.gz
;; Might use {,} for bash or csh:
(defvar dired-mark-prefix ""
"Prepended to marked files in Dired shell commands.")