Linux Shells by Example

The TC Shell Lab Exercises

Lab 1—Getting Started

1. What does the init process do?

2. What is the function of the login process?

3. How do you know what shell you are using?

4. How can you change your login shell?

5. Explain the difference between the .tcshrc, .cshrc, and .login files. Which one is executed first?

6. Edit your .tcshrc file as follows:

   1. Create three of your own aliases.

   2. Reset your prompt with the host machine name, time, username.

   3. Set the following variables and put a comment after each variable explaining what it does.

Example 10.87.

noclobber # protects clobbering files # from redirection overwriting history ignoreeof savehist prompt2

1. Type the following:

   								source .tcshrc
   							

   What does the source command do?

2. Edit your .login file as follows.

   1. Welcome the ...