15-213 Introduction to Computer Systems
Suppose your user name is bovik. Login to an Andrew Linux or Unix machine and go to your Andrew home directory.
then type your Andrew password to the prompt.
The uppercase 'ANDREW.CMU.EDU' is significant. The string "-l" is dash el, not dash one. Your top level Andrew home directory needs to be at least world listable: "system:anyuser l".
Information about the CS computing environment is at http://www.cs.cmu.edu/~help.
If you are having trouble logging in, please send mail to your instructor (fp@cs).
Q: How do I get an account?
A: Accounts will be created for you automatically.
Q: Are the accounts ready yet?
A: Yes (as of Tue, Jan 17, 2006).
Current student account status
If you're not on the list, please request an account from the instructor (fp@cs).
Q: What do I need to do before logging in for the very
A: From your Andrew home directory on an Andrew Unix machine (e.g., linux.andrew.cmu.edu or unix.andrew.cmu.edu), run the following one-time checkin script:
unix> /afs/cs/academic/class/15213-s06/bin/checkinYour top level Andrew home directory needs to be at least world listable: "system:anyuser l".
Q: What does the checkin script do?
A: The checkin script activates your account so that you can login to the fish machines using your Andrew password. It creates a hidden directory called ~/.15213 with login credentials for the fish machines. If you don't have one already, it also creates a protected directory ~/213hw where you can safely do your assignments without other students being able to see them. You only need to run the checkin script once, before your very first login to the fish machines. However, you can safely run the checkin script as often as you like.
Q: How do I login to one of these machines once I have run the
A: If your Andrew login is bovik and you want to login to the fish machine called tuna.ics.cs.cmu.edu, then type the following while logged in to an Andrew Unix machine:
unix> ssh -x -l bovik@ANDREW.CMU.EDU tuna.ics.cs.cmu.edu [type your Andrew password to the prompt]Note: The uppercase 'ANDREW.CMU.EDU' is significant.
Q: I did everything you said but I still can't login. Now what?
A: Here are the most common reasons students can't login:
unix> cd unix> fs sa -dir ~ -acl system:anyuser l unix> fs sa -dir ~/.15213 -acl system:anyuser rl
If you still can't login, please send mail to your instructor.
Each node on the cluster runs a 64-bit version of Fedora Core 3 (Linux kernel 2.6.11) and consists of the following hardware: