Before installing 
COBOL Runtime Environment
for AIX 
Before you install
IBM® COBOL
Runtime Environment for AIX, V5.1 :
- Familiarize yourself with the installation image, which contains
the installable runtime environment filesets.
- Ensure that system prerequisites such as disk space and operating
system are met.
- Determine the tasks you need to perform, depending on your installation
requirements.
- Become either the root user or a user with administrator privileges.