[U-Boot-Users] Delete all env vars except read onlys

[Martin Krause]

u-boot-users-bounces at lists.sourceforge.net wrote on :
> Uff....
> 
> After a longish  discussion  with  Detlev  we  came  up  with  a  new
> proposal,  which  hopefully  is  acceptable  to all. We agreed that a
> command name like "clearenv" or "scrubenv" or similar (which  doesn't
> require  any  arguments) might be too dangerous for the unexperienced
> user why randomly types commands "just  to  see  what  happens".  For
> example,  even  if you type "erase" it will not do any damage because
> arguments are missing - but "erase all" will blow away most  of  your
> flash content without asking.
> 
> So the idea is to call the new command "environment" (or short "env");
> usage would be then:
> 
> 	=> env clear
> 
> to clear the envrionment (except read-only variables); thsi also
> allows for pretty useful additional functionality like this:
> 
> 	=> env default

This would be a very nice feature. With this command no knowledge is
needed in which sector(s) the environment is stored. This would be
very convenient in our production or service department, because
all our different boards could be reseted to a known state with the
same command.

> 
> to reset the environment to the (compiled in) default settings.
> 
> One might even consider something like
> 
> 	=> env clear all
> 
> to blow away the whole env, including the read-only variables.
> 
> 
> Would that be acceptable to everybody?

No objections!

Best Regards,
Martin Krause

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