What is ruby-oci8
Ruby-oci8 is a ruby interface for Oracle Database. The latest version is available for all Oracle versions after Oracle 9i including Oracle Instant Client.
If you need to use Oracle 8, use ruby-oci8 2.0.6.
Connect to scott/tiger, select
emp and print as CSV format.
ruby -r oci8 -e "OCI8.new('scott', 'tiger').exec('select * from emp') do |r| puts r.join(','); end"
If you install a ruby-oci8 gem package, you may need to add