Debian packages that has this binary:
/usr/share/doc/r-cran-qtl/examples/bin/test/cofactors.txt
/usr/share/doc/r-cran-qtl/examples/bin/test/t11/cofactors.txt
/usr/share/doc/r-cran-qtl/examples/bin/test/t12/cofactors.txt
/usr/share/doc/r-cran-qtl/examples/bin/test/t22/cofactors.txt
/usr/share/doc/r-cran-qtl/examples/bin/test/t23/cofactors.txt
/usr/share/doc/r-cran-qtl/examples/bin/test/t33/cofactors.txt