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linux-intro-2010 - Using LINUX a BCMB/CHEM 8190 Tutorial...

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Using LINUX – a BCMB/CHEM 8190 Tutorial Updated (1/6/10) Objective: Learn some basic aspects of the UNIX operating system and how to use it. What is UNIX? UNIX is the operating system used by most computers that do not use Windows or Mac OS. Most very large computers, and most specialized computers used by scientists use some version of UNIX. UNIX comes in many varieties, most of which have a lot in common. Macintosh computers, for instance, use UNIX (a version of BSD UNIX). Silicon Graphics computers use IRIX, lots of PC users use LINUX, etc. Fortunately, these varieties are very similar, and most of what you need to learn to be able to use any of these is common to them all. Some knowledge of UNIX and related subject matter is not only useful to scientists but obligatory. In this tutorial, we will get to know some simple UNIX commands, etc. The Biochemistry computer lab in the Life Sciences building at UGA has a collection of workstations (PCs) networked to a central server. These use a version of LINUX called RED HAT. The setup allows your accounts and files to reside on the server so that you can sit at (and login from) any workstation. UNIX Help There are thousands of on-line UNIX help/tutorial sites, and hundreds of UNIX books for you to purchase (or check out of the library!). The University of Georgia Enterprise Information Technology Services (EITS) has a nice online UNIX tutorial ( http://www.softlab.ece.ntua.gr/facilities/documentation/unix/unixintro/ ). UNIX Shells Unix “shells” are vehicles or interfaces for interacting with the UNIX “kernel”. There are several different ones: Bourne shell (bash), C shell (csh / tcsh), Korn shell (ksh), etc.. For our tutorial today we will use the t shell . There are lots of websites that can tell you about the different shells (for instance http://www.softlab.ece.ntua.gr/facilities/documentation/unix/shelldiff.html ). Terminal We’ll assume that you’ve sitting at one of the networked workstations. You will see a login page asking for your username (your accounts will be set up on the first day of class). After giving your user name you will be asked for a password. Enter the one given you and hit return on the keyboard. Remember that both your user name and password are case sensitive – anita, Anita, and ANITA are all different. One of your first tasks will be to change your password. At this point everyone at UGA should have completed the SecureUGA training modules. One of the modules gives advice on passwords. If you haven’t completed this or need a refresher go to the website: https://secure.uga.edu/ . Once logged in you should see an icon called YourName_Home. Click on this icon to get a home window. Go to the pull-down list under “File” on the top bar and select “open terminal”.
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