/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/ is in libpetsc3.7.7-dbg 3.7.7+dfsg1-2build5.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/documentation
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/images/
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/images/arrow.png
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/images/transition.bmp
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/PETSc.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/boxTree.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/defaults.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/drawDiagrams.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/events.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/getCmdOptions.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/listLogic.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/main.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/matrixTex.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/parsePrefix.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/populateLists.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/recordSawsData.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/tree.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/treeInterface.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/js/utils.js
/usr/lib/petscdir/3.7.7/x86_64-linux-gnu-real-debug/share/petsc/saws/readme