grub: save_env
16.3.64 save_env
----------------
-- Command: save_env [--file file] var ...
Save the named variables from the environment to the environment
block file. ⇒Environment block.
The '--file' option overrides the default location of the
environment block.
This command will operate successfully even when environment
variable 'check_signatures' is set to 'enforce' (⇒
check_signatures), since it writes to disk and does not alter the
behavior of GRUB based on any contents of disk that have been read.
It is possible to modify a digitally signed environment block file
from within GRUB using this command, such that its signature will
no longer be valid on subsequent boots. Care should be taken in
such advanced configurations to avoid rendering the system
unbootable. ⇒Using digital signatures, for more
information.
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