For ease of use with SQL*Plus, create a parent folder above this one on your OS, and set that folder as your default startup folder for SQL*Plus. You may wish to create the following file in this top-level folder which has some useful prompt and display column formatting.

Oracle 9i and 10g Parent Folder Script(s)
Generic prompt and display columns script

Oracle 9i and 10g Database Configuration Scripts
Column definitions, used by all scripts
Clear column definitions, used by all scripts
Run all scripts in this folder
Archive log settings
Database links
List of users
System directories
Tablespace free space
Defined jobs
OS file locations
Schema information