[GRASS5] OVERWRITE

[Radim Blazek]

Hamish wrote:
>>New GRASS users are usually surprised that most GRASS modules silently
>>or with warning overwrite existing maps. Most normal users
>>however like this feature (AFAIK).
> 
> 
> I don't. Specifically when collecting data in the field & you are
> working hard all day it is easy to mess up and no way to recollect the
> data. Therefore make it hard to overwrite by mistake. This is why I put
> an overwrite check in v.in.garmin (usual use for me is to hook up to
> laptop and use up arrow in terminal to get last download command and
> change the output= name to reflect the date/time).
> 
> Messing up while post-processing data is not so bad as long as the raw
> data is not damaged. You can always use 'v.info -h' to quickly
> reproduce. ?
> 
> Personally I like overwrite protection & to have to specifically use
> the -o flag.

For vectors you can use
g.gisenv set=OVERWRITE=0

Radim