Man page - stl_merge(1)
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Manual
STL_MERGE
NAMEDESCRIPTION
NAME
stl_merge - stl_merge concatenates multiple STL files.
DESCRIPTION
stl_merge concatenates multiple STL files.
usage: stl_merge [ -o <out file> ] [ <in file1> ... ]
Merges binary stl files into a single file. If no out file is provided, data is output to stdout.