Edit your .cshrc file or equivalent and add the following statement at some
point after the code used to set your shell "PATH" variable:
For the majority of users, this is all that will be necessary. The file
will add to your UNIX shell environment all of the necessary
paths and environment variable defaults upon logging in. You may execute
this command manually as well in order to avoid logging out, then back in
for the first-time user.
Users can make additional modifications to the variables set in this file
Note that if you are using the department standard cshrc script
you need not do anything. This shell script executes latex.env for you.
Customizations to your latex environment may be made in your .cshrc.custom