title: unixODBC installed but odbcinst.ini and odbc.ini are empty
body: <p>I'm trying to setup a CentOS 8 RStudio-Server to connect to MS SQL server using odbc.  I think I've installed the unixODBC driver, the odbcinst -j command shows below:  But the ini files are empty and R odbc isn't able to connect to the db.
  Hoping someone can provide some hints on how to troubleshoot this.
  Thank you in advance.</p>
  
  <pre><code>$ odbcinst -j
  unixODBC 2.3.7
  DRIVERS............: /etc/odbcinst.ini
  SYSTEM DATA SOURCES: /etc/odbc.ini
  FILE DATA SOURCES..: /etc/ODBCDataSources
  USER DATA SOURCES..: /home/user/.odbc.ini
  SQLULEN Size.......: 8
  SQLLEN Size........: 8
  SQLSETPOSIROW Size.: 8
  </code></pre>