Shells like the default USS Korn shell (/bin/sh) or the Bash shell run a
common profile (/etc/profile or /etc/bashrc) for a user when they log
on. This creates a runtime environment that contains either required or default
settings. Each user can supplement or override these settings in .profile
or .bashrc in their home directory.
Here is a set of recommended profiles that illustrate some best practices for USS users: