Then, you could type in 'rl ieng' to rlogin to ieng9. There are many shell scripts installed on ACS systems, so it shouldn't be hard to find examples. Your .login and .cshrc files are basic examples of C shell scripts. Please refer to the man pages and the section of this article that describes how to get more information for recommended books. Several excellent books on using UNIX are kept in the Accounts Office, APM 1218, that are available for overnight checkout.
Man pages are generally very complete descriptions of the shell and it's function.
They're free and readily available. The man pages for shells are rather long. This can be viewed from a workstation using ghostscript, or printed to a laser printer.