To make a user's home directory available anywhere on the network, always refer to the home directory with the variable $HOME. For example, use $HOME/bin instead of /export/home/username/bin. The $HOME variable works when the user logs in to another system, and the home directories are auto-mounted.
To access files on a local disk, use global path names, such as /net/system-name/directory-name. Any directory referenced by /net/system-name can be mounted automatically on any system on which the user logs in, assuming the system is running AutoFS.