features are not really documented properly

[hw-claudio]

Hello,

I could not find no clear doc either in the cmdline tool itself, or in the manpage about what a certain option is supposed to do,
and how options are supposed to relate to each other.

./src/efivar --help
Usage: efivar [OPTION...]
-l, --list list current variables
^^^ where? In the local filesystem? In the file specified with "-f" ...?

-p, --print print variable specified by --name
^^^ on which variables does the command operate?

-D, --dmpstore use DMPSTORE format when exporting
-d, --print-decimal print variable in decimal values specified by --name
^^^ the decimal value is specified by --name?

-n, --name= variable to manipulate, in the form
8be4df61-93ca-11d2-aa0d-00e098032b8c-Boot0000
...
-f, --datafile= load or save variable contents from
^^^ which ACTIONS are affected by this option?

-e, --export= export variable to
^^^ export variable FROM where?

-i, --import= import variable from
^^^ import variable INTO where?

-L, --list-guids show internal guid list
-w, --write write to variable specified by --name

^^^ the variable in the file, or in the local machine or ???

Help options:
-?, --help Show this help message
^^^ the help function is not very helpful I think.

---

I attempted to run efivar -l -f datafile to get a list of the variable stored in this file, but to my surprise I got the variables in

/sys/firmware/efi/efivars/ , is this expected?