How do I create a DSN for ODBC in Linux?

I am digging around in a Linux application that supposedly uses DSNs to connet to SQL Server. The connection stopped working and I can't find the credentials that are being used (all I know is the DSN's name).

I am familiar with DSNs in Windows, but how are they created and where are they stored in Linux?

From stackoverflow

• Simply look for your odbc.ini file. Usually it should be under /etc, but I guess it can differ from one Linux flavour to another.

  Some information on how it is done in Ubuntu, and this is a generalized guide for Linux/Unix.

  Hope this helps.

• For unixODBC, DSNs are listed in /usr/local/etc/odbc.ini. Installed ODBC drivers will be listed in /usr/local/etc/odbcinst.ini.

  Try:

  usr$ find . -iname 'odbc*.ini'