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 Administration Scripts
Compile invalid objects
Compile invalid objects (user)
Compile all objects (user)
Compile invalid java objects (user)
Delete duplicates (use just for ideas, rather than in earnest)
Remove all objects in a schema
Generate SQL to recreate foreign key constraints
Shrink OS files
Truncate all tables (user)