$env:PATH="$PATH;C:\OSGeo4W64\bin\"
$env:GDAL_DATA="C:\OSGeo4W64\share\gdal\"


PS C:\Users\hobu\exercises\batch> Get-ChildItem  C:\Users\administrator\exercises\batch\ll\*.laz | foreach {pdal pipeline C:\Users\hobu\exercises\batch\batch_srs_gdal.json --readers.las.filename=.\ll\$($_.BaseName).laz --writers.gdal.filename=.\dtm\$($_.BaseName).tif --filters.reprojection.out_srs=epsg:26919}