Hi Stefan,
what about a 'scrubenv' or 'cleanenv' command that tries to unset all variables leaving readonlys untouched.
The command could request a confirmation:
=> scrubenv Do you really want to do this ('yes' or 'no')? yes Can't overwrite "serial#" Can't overwrite "ethaddr" => saveenv
The above output is faked. So I did not start coding :-)
What do you think?
Matthias
On Tuesday 12 February 2008 15:49, Stefan Roese wrote:
Hi Matthias,
On Tuesday 12 February 2008, Matthias Fuchs wrote:
I am wondering if there is a way to delete all environment variables but not the readonly ones. The common way to delete all variables is to make the environment CRC invalid an do a reset. After reset a saveenv saves a default environment.
What I want to do is to delete all variables (preferable from an autoscr script) but not the vendor variables like serial# and eth?addr.
Wildcards in the setenv parameters would solve this issue, but chars like '*' or '?' are valid chars for environment variables.
Any idea?
I don't know of such a solution. But such a "feature" would be handy sometimes. So perhaps this needs to get implemented as a new U-Boot command. But you should be careful. Such a command should require probably a password, to that users don't unintentionally erase their environment.
Best regards, Stefan