cat .cshrc command: The cat command displays the contents of the .cshrc file. This file should reside in your home directory.
alias output block: Several aliases have been defined. These aliases will be available at log in and throughout your UNIX session, unless you disable any of them with unalias.
set history command: The history variable is set to 100. This means that command history will be available, as soon as you log in, for the 100 most recent commands.
set prompt command: The prompt variable defines a prompt, What next?, that will take effect at your next log in, unless you change the prompt at the command line.
last lab1% prompt: Note that your current prompt is unaffected. Even though you defined a different prompt in .cshrc, the new prompt will not take effect until UNIX reads the .cshrc file, at your next login.