/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/ is in docbook-dsssl 1.79-6ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbadmon.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbautoc.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbbibl.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbblock.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbcallou.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbcompon.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbdivis.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbefsyn.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbgloss.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbgraph.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbindex.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbinfo.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbinline.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dblink.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dblists.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dblot.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbmath.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbmsgset.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbparam.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbprint.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbprocdr.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbqanda.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbrfntry.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbsect.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbsynop.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbtable.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbtitle.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbttlpg.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbverb.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/docbook.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/notoc.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/plain.dsl
/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/version.dsl