ecryptfs-insert-wrapped-passphrase-into-keyring - unwrap a wrapped passphrase from file and insert into the kernel keyring.
printf "%s" "wrapping passphrase" | ecryptfs-insert-wrapped-passphrase-into-keyring [file] -
ecryptfs-insert-wrapped-passphrase-into-keyring is a utility to manually unwrap a passphrase from a file, and insert the unwrapped passphrase into the kernel keyring.
This manpage was written by Dustin Kirkland <email@example.com> for Ubuntu systems (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or any later version published by the Free Software Foundation.
On Debian and Ubuntu systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.