h5rm

a = h5open(TMPDIR + "/test.h5", "a");

// We can create several groups under root
names = "Group_" + string(1:10);
h5group(a, names)

// we display them
h5ls(a)

// ... or
a.root.groups

// we can remove a part of them
names = "Group_" + string(1:2:10);
h5rm(a, names);

// we check that all is ok
a.root.groups

// We have finished so we free all the resources
h5close(a);

// We can remove attributes too
x = %pi;
save(TMPDIR + "/x.sod", "x"); // SOD files are HDF5 ones 	

// Open the created file
a = h5open(TMPDIR + "/x.sod");

// we look for attributes
h5ls(a)

// ... or
a.root.attributes

// We remove 'SCILAB_sod_version'
h5rm(a, "SCILAB_sod_version"), h5ls(a)

// Free the resources
h5close(a);