/usr/lib/aolserver4/modules/ is in aolserver4-daemon 4.5.1-18.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/aolserver4/modules/tcl/
/usr/lib/aolserver4/modules/tcl/app3.tcl
/usr/lib/aolserver4/modules/tcl/charsets.tcl
/usr/lib/aolserver4/modules/tcl/compat.tcl
/usr/lib/aolserver4/modules/tcl/debug.tcl
/usr/lib/aolserver4/modules/tcl/fastpath.tcl
/usr/lib/aolserver4/modules/tcl/file.tcl
/usr/lib/aolserver4/modules/tcl/form.tcl
/usr/lib/aolserver4/modules/tcl/http.tcl
/usr/lib/aolserver4/modules/tcl/init.tcl
/usr/lib/aolserver4/modules/tcl/modlog.tcl
/usr/lib/aolserver4/modules/tcl/nsdb.tcl
/usr/lib/aolserver4/modules/tcl/nsperm/
/usr/lib/aolserver4/modules/tcl/nsperm/compat.tcl
/usr/lib/aolserver4/modules/tcl/nsperm/init.tcl
/usr/lib/aolserver4/modules/tcl/packages.tcl
/usr/lib/aolserver4/modules/tcl/pools.tcl
/usr/lib/aolserver4/modules/tcl/prodebug.tcl
/usr/lib/aolserver4/modules/tcl/return.tcl
/usr/lib/aolserver4/modules/tcl/sendmail.tcl
/usr/lib/aolserver4/modules/tcl/stats.tcl
/usr/lib/aolserver4/modules/tcl/util.tcl