Generate WSDL from command line?

We frequently need to re-deploy a WSDL service whenever our developers change the package spec.  It's a time-consuming process so I'm trying to script it so it can be run from either a concurrent program or shell script.

I've been able to script every step except re-generating the WSDL, which we have to do by logging into EBS with the SOA Gateway responsibility.  We then query the interface name and then generate the WSDL.

From a high level this is what we do:

1. create ildt file

  $IAS_ORACLE_HOME/perl/bin/perl $FND_TOP/bin/irep_parser.pl -g -v -username=sysadmin \