/usr/ is in libmuparserx-dev 4.0.7+dfsg-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/libmuparserx.so
/usr/include/
/usr/include/muparserx/
/usr/include/muparserx/mpCompat.h
/usr/include/muparserx/mpDefines.h
/usr/include/muparserx/mpError.h
/usr/include/muparserx/mpFuncCmplx.h
/usr/include/muparserx/mpFuncCommon.h
/usr/include/muparserx/mpFuncMatrix.h
/usr/include/muparserx/mpFuncNonCmplx.h
/usr/include/muparserx/mpFuncStr.h
/usr/include/muparserx/mpFwdDecl.h
/usr/include/muparserx/mpICallback.h
/usr/include/muparserx/mpIOprt.h
/usr/include/muparserx/mpIPackage.h
/usr/include/muparserx/mpIPrecedence.h
/usr/include/muparserx/mpIToken.h
/usr/include/muparserx/mpIValReader.h
/usr/include/muparserx/mpIValue.h
/usr/include/muparserx/mpIfThenElse.h
/usr/include/muparserx/mpMatrix.h
/usr/include/muparserx/mpMatrixError.h
/usr/include/muparserx/mpOprtBinAssign.h
/usr/include/muparserx/mpOprtBinCommon.h
/usr/include/muparserx/mpOprtCmplx.h
/usr/include/muparserx/mpOprtIndex.h
/usr/include/muparserx/mpOprtMatrix.h
/usr/include/muparserx/mpOprtNonCmplx.h
/usr/include/muparserx/mpOprtPostfixCommon.h
/usr/include/muparserx/mpPackageCmplx.h
/usr/include/muparserx/mpPackageCommon.h
/usr/include/muparserx/mpPackageMatrix.h
/usr/include/muparserx/mpPackageNonCmplx.h
/usr/include/muparserx/mpPackageStr.h
/usr/include/muparserx/mpPackageUnit.h
/usr/include/muparserx/mpParser.h
/usr/include/muparserx/mpParserBase.h
/usr/include/muparserx/mpParserMessageProvider.h
/usr/include/muparserx/mpRPN.h
/usr/include/muparserx/mpScriptTokens.h
/usr/include/muparserx/mpStack.h
/usr/include/muparserx/mpTest.h
/usr/include/muparserx/mpTokenReader.h
/usr/include/muparserx/mpTypes.h
/usr/include/muparserx/mpValReader.h
/usr/include/muparserx/mpValue.h
/usr/include/muparserx/mpValueCache.h
/usr/include/muparserx/mpVariable.h
/usr/include/muparserx/suSortPred.h
/usr/include/muparserx/suStringTokens.h
/usr/include/muparserx/utGeneric.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/muparserx.pc
/usr/share/
/usr/share/cmake/
/usr/share/cmake/muparserx/
/usr/share/cmake/muparserx/muparserxConfig.cmake
/usr/share/cmake/muparserx/muparserxConfigVersion.cmake
/usr/share/doc/
/usr/share/doc/libmuparserx-dev/
/usr/share/doc/libmuparserx-dev/copyright
/usr/share/doc/libmuparserx-dev/examples/
/usr/share/doc/libmuparserx-dev/examples/example.cpp.gz
/usr/share/doc/libmuparserx-dev/examples/timer.cpp
/usr/share/doc/libmuparserx-dev/examples/timer.h
/usr/share/doc/libmuparserx-dev/changelog.Debian.gz