Hello,
the list of executables integrated into coreutils-minimal is defined at [1].
Alternatively to extending the feature set of coreutils-minimal, you may consider creating a custom runtime pkg using the regular src/coreutils archive instead of src/coreutils-minimal. To do that, you can follow the lines of the 'system_shell' pkg [2]. This approach is preferable because it does not require any modification of the Sculpt base system (which depends on coreutils-minimal).
[1] https://github.com/genodelabs/genode/blob/master/repos/ports/src/noux-pkg/co... [2] https://github.com/genodelabs/genode/tree/master/repos/ports/recipes/pkg/sys...
Cheers Norman