sg_unmap(8) on Linux
The text 977d4695c543, as Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
send SCSI UNMAP command (known as 'trim' in ATA specs)
Flags it lists
-
--anchor -
--grpnum -
--help -
--in -
--lba -
--num -
--timeout -
--verbose -
--version -
-I -
-V -
-a -
-g -
-h -
-l -
-n -
-t -
-v