Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
ecryptfs-rewrap-passphrase (return code: 0)
Usage:
ecryptfs-rewrap-passphrase [file]
or
printf "%s\n%s" "old wrapping passphrase" "new wrapping passphrase" | ecryptfs-rewrap-passphrase [file] -