As with the Bourne shell, a good place to start is by checking that the current shell is in fact the C Shell. An interactive shell can be temporarily invoked, until the end of the session, for learning or using the C shell by typing csh . This is essentially the same as the output from the same command in the Bourne shell with the exception of the different prompt.
All shells handle command lines in the same manner.
They first accept the user input and then they break it down into individual components such as the command to be executed and any flags that go with it. The C shell allows long command lines in the same manner that the Bourne shell did. This backslash character tells the shell to ignore the enter-key when it is pressed. This and other special characters will be examined in the section on filename substitution.