Datastore & backup - request for help

Bert Freudenberg bert at
Wed May 21 04:40:51 EDT 2008

On 21.05.2008, at 00:34, Martin Langhoff wrote:

> On Tue, May 20, 2008 at 11:43 PM, Bert Freudenberg <bert at 
> > wrote:
>> Ah, Marco rightly pointed out hal-get-property. Much easier that way:
>> hal-get-property --udi $battery --key battery.charge_level.percentage
>> hal-get-property --udi $ac_adapter --key ac_adapter.present
> Great! Each portable check is about 60ms vs 30ms for me, so I've added
> the portable version if we can't find the OLPC-specific entries under
> /sys. Done and pushed out.

Yes, hal-* does a D-Bus round-trip. You could get as fast by using HAL  
only to find the actual sysfs path, and subsequently fetching the data  
directly from sysfs:

hal-get-property --udi $battery --key linux.sysfs_path

> Now, is there a reasonable way to check for whether we are in a  
> school mesh?

No idea.

- Bert -

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