cif_filter(1) on Linux
The text b4110745cd67, as Debian 11 (Bullseye) shipped it.
parse a CIF file and print out essential data values in the CIF format, the COD CIF style. This script has also many capabilities -- it can restore space group symbols from symmetry operators (consulting predefined tables), parse and tidy-up _chemical_formula_sum, compute cell volume, exclude unknown or "empty" tags, and add specified bibliography data.