/usr/share/doc/libsuperlu-dev/examples/ is in libsuperlu3-dev 3.0+20070106-3.
This file is owned by root:root, with mode 0o755.
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/usr/share/doc/libsuperlu-dev/examples/Makefile
/usr/share/doc/libsuperlu-dev/examples/README
/usr/share/doc/libsuperlu-dev/examples/clinsol.c
/usr/share/doc/libsuperlu-dev/examples/clinsol1.c
/usr/share/doc/libsuperlu-dev/examples/clinsolx.c
/usr/share/doc/libsuperlu-dev/examples/clinsolx1.c
/usr/share/doc/libsuperlu-dev/examples/clinsolx2.c
/usr/share/doc/libsuperlu-dev/examples/cmat.gz
/usr/share/doc/libsuperlu-dev/examples/dlinsol.c
/usr/share/doc/libsuperlu-dev/examples/dlinsol1.c
/usr/share/doc/libsuperlu-dev/examples/dlinsolx.c
/usr/share/doc/libsuperlu-dev/examples/dlinsolx1.c
/usr/share/doc/libsuperlu-dev/examples/dlinsolx2.c
/usr/share/doc/libsuperlu-dev/examples/dreadtriple.c
/usr/share/doc/libsuperlu-dev/examples/g10.gz
/usr/share/doc/libsuperlu-dev/examples/slinsol.c
/usr/share/doc/libsuperlu-dev/examples/slinsol1.c
/usr/share/doc/libsuperlu-dev/examples/slinsolx.c
/usr/share/doc/libsuperlu-dev/examples/slinsolx1.c
/usr/share/doc/libsuperlu-dev/examples/slinsolx2.c
/usr/share/doc/libsuperlu-dev/examples/sp_ienv.c
/usr/share/doc/libsuperlu-dev/examples/superlu.c
/usr/share/doc/libsuperlu-dev/examples/zlinsol.c
/usr/share/doc/libsuperlu-dev/examples/zlinsol1.c
/usr/share/doc/libsuperlu-dev/examples/zlinsolx.c
/usr/share/doc/libsuperlu-dev/examples/zlinsolx1.c
/usr/share/doc/libsuperlu-dev/examples/zlinsolx2.c
/usr/share/doc/libsuperlu-dev/examples/zreadtriple.c