A lot of OGo services can be accessed from a Unix shell, either using
specialized commandline tools or using the excellent xmlrpc_call tool
which allows you to invoke OGo XML-RPC services from the shell.
The xmlrpc_call tool is a small Unix terminal program for accessing basic
XML-RPC services using the Unix shell. It's very useful for discovering the
functionality of the OGo XML-RPC daemon.
A small overview of xmlrpc_call can be found in this document.
Linux Shell Scripting Tutorial
Advanced Bash-Scripting Guide