Prerequisite Implementation Tasks › Prerequisites on the Target System › Define Environment Variables

Define Environment Variables

The Implementation Toolset uses environment variables to specify paths and other configuration information necessary to install and use CA Gen applications. The environment variables set up macros, or aliases, referenced in several places, including the MAKE files, source code, and script files. Each user's .login file must set the variables to ensure they are properly set during system logon, before invoking the Build Tool or the AEF.

When set, environment variables retain the new values until the end of the current logon session, or until they are dynamically changed. When a process spawns a new shell, environment variables revert to their original logon values. When exiting the new shell, the variables reset to the values they held before the new shell was spawned.

To display the current environment, use the env command. To view the current value of an environment variable, use the echo command as shown by the following example:

echo $AEPATH