[GRASS-user] skripting with xargs: bug or feature ?

[peter.loewe at gmx.de]

Hi,

I just stumbled over this one:

For some reason, xargs can't be used when LOTS of filenames have to be concatenated in a GRASS script.

The example attempts to collect all raster layers with a 6-character name to stack them into 
a volume.

g.mlist type=rast pattern='??????' sep=, |xargs r.to.rast3 input={} output=The_volume

While the xargs-string is correctly built, r.to.rast3 prints an error message. 

The old-fashioned approach works:

list=`g.mlist type=rast pattern='??????' sep=,`
foo="r.to.rast3 input=$list output=volume"
eval $foo

Comments, anyone ?

Peter

-- 
Dr. Peter Löwe
<peter.loewe at gmx.de>





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