Thanks for all the help. Special thanks to Bob Lehman and Dave DeMay.
I received two solutions and they are:
echo drop user username cascade ; | sqlplus wcadmin/wcadmin@wind
This assumes a password and user of wcadmin and a db name of win -
technically a TNS name of wind. Change appropriatly
If you are running unix add quotes
echo "drop user username cascade ;" | sqlplus wcadmin/wcadmin@wind
and
In that case you need the sqlplus flag to run a sql file from
command line and you place the commands in the sql file. Bada bing.
Oracle website or typing sqlplus will tell you what
command/parameter flag to use.