The illustration `em_10g_dir_structure.gif` consists of a diagram that shows folder icons that represent the two home directories created when you install the Grid Control framework. Specifically, the illustrations shows the Management Service home directory, which contains the following directories:

- The `bin` directory, which contains the `emctl` command discussed later in this chapter

- The `sysman` directory, which contains the Enterprise Manager configuration. logging, and administration files

- The `opmn` directory and its bin subdirectory, which contains the opmnctl command discussed later in this chapter

- The `j2ee` and its `OC4J_EM` subdirectory, which contains the files used to deploy the Management Service J2EE application.

In addition, at the same level as the Management Service home directory, the illustration shows the Management Agent home directory, which contains its own `bin` directory and `sysman` directory.