ext4magic(8) on Linux
The text 25dffd42e4b5, as Debian 8 (Jessie) shipped it.
recover deleted files on ext3/4 filesystems
Flags it lists
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-B -
-D -
-H -
-I -
-J -
-L -
-M -
-Q -
-R -
-S -
-T -
-V -
-a -
-b -
-c -
-d -
-f -
-i -
-j -
-l -
-m -
-n -
-r -
-s -
-t -
-x