/usr/share/man/ is in libblas-test 1.2.20110419-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/man/man1/xcblat3.1.gz
/usr/share/man/man1/xdblat1.1.gz
/usr/share/man/man1/xzblat1.1.gz
/usr/share/man/man1/xzblat2.1.gz
/usr/share/man/man1/
/usr/share/man/man1/libblas-test.1.gz
/usr/share/man/man1/xccblat1.1.gz
/usr/share/man/man1/xcblat1.1.gz
/usr/share/man/man1/xcblat2.1.gz
/usr/share/man/man1/xdblat2.1.gz
/usr/share/man/man1/xdblat3.1.gz
/usr/share/man/man1/xsblat2.1.gz
/usr/share/man/man1/xsblat3.1.gz
/usr/share/man/man1/xsblat1.1.gz
/usr/share/man/man1/xzcblat3.1.gz
/usr/share/man/man1/xdcblat3.1.gz
/usr/share/man/man1/xscblat2.1.gz
/usr/share/man/man1/xdcblat2.1.gz
/usr/share/man/man1/xzblat3.1.gz
/usr/share/man/man1/xccblat3.1.gz
/usr/share/man/man1/xzcblat2.1.gz
/usr/share/man/man1/xccblat2.1.gz
/usr/share/man/man1/xzcblat1.1.gz
/usr/share/man/man1/xscblat3.1.gz
/usr/share/man/man1/xdcblat1.1.gz
/usr/share/man/man1/xscblat1.1.gz