[GRASS-dev] how to deal with the @mapset in scripts?

[Glynn Clements]

Maciej Sieczka wrote:

> > Why do you actually need to use g.findfile? In most cases, you should
> > just pass the map name directly to the command, and let the command
> > handle the checking.
> 
> It's better to check if the output exists in the initial stage of my
> script, than to let it run for an hour and then fail with an error that
> the output already exists in the end.

If the output map is specified by an option whose "gisprompt" setting
includes "new", g.parser will automatically ensure that it doesn't
exist unless --o[verwrite] is given or $GRASS_OVERWRITE == 1.

Also, if --o is passed to the script, GRASS_OVERWRITE will be set
automatically, so any commands invoked from the script will overwrite
output maps.

-- 
Glynn Clements <glynn at gclements.plus.com>