/usr/share/ is in libdeal.ii-dev 6.3.1-1.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/deal.II/misc/head_h.pl
/usr/share/deal.II/Make.rules
/usr/share/deal.II/scripts/
/usr/share/doc/
/usr/share/deal.II/misc/head
/usr/share/deal.II/
/usr/share/deal.II/Makefile.template.in
/usr/share/deal.II/Make.global_options
/usr/share/deal.II/template-arguments
/usr/share/deal.II/Makefile.template
/usr/share/deal.II/template-arguments.in
/usr/share/deal.II/misc/
/usr/share/deal.II/misc/head_cc.pl
/usr/share/doc/libdeal.ii-dev/
/usr/share/deal.II/scripts/dealmacros.el
/usr/share/deal.II/scripts/normalize.pl
/usr/share/deal.II/scripts/lapack_templates.pl
/usr/share/deal.II/scripts/squash_gmonout.pl
/usr/share/deal.II/scripts/diffsearch
/usr/share/deal.II/scripts/make_dependencies.pl.in
/usr/share/deal.II/scripts/make_dependencies.pl
/usr/share/deal.II/scripts/fe_table.pl
/usr/share/deal.II/scripts/minimize_boost
/usr/share/deal.II/scripts/report-regression-tests.pl
/usr/share/deal.II/scripts/copyright.pl
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/usr/share/deal.II/scripts/Makefile
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/usr/share/doc/libdeal.ii-dev/copyright
/usr/share/doc/libdeal.ii-dev/README.Debian.html
/usr/share/doc/libdeal.ii-dev/changelog.Debian.gz
/usr/share/deal.II/scripts/make_dependencies
/usr/share/deal.II/scripts/expand_instantiations