I downloaded LINUX.X64_193000_db_home.zip from Oracle.  I checked the sha256sum and it matched what Oracle said it should be.  When I unzip it some of the files are empty including OH/bin/sqlplus and OH/bin/tnsping.  Is this by design?
$ unzip -l LINUX.X64_193000_db_home.zip  |grep tnsping
        0  04-18-2019 01:21   bin/tnsping
The first column of the output is "length".  When unzipped it has 0 bytes size.
Thanks in advance for your help.
Vince