More error messages when we try to use operations that would fail when used on a FIFO.
More error messages when we try to use operations that would fail when used on a FIFO.

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools