Introduction to Unix/Linux ICN Summer Institute Jackson State University June 16, 2009 Mississippi Center for Supercomputing Research Jason Hale & Susan.

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Presentation transcript:

Introduction to Unix/Linux ICN Summer Institute Jackson State University June 16, 2009 Mississippi Center for Supercomputing Research Jason Hale & Susan Lukose, Ph.D.

Unix is an Operating System An O/S manages access to the resources of a computer. O/S host applications, shielding them from the hardware. Other popular operating systems: Windows XP, Windows Vista, MAC OS X Unix looks more like DOS than Windows

Common Flavors of Unix IBM’s AIX Hewlett Packard’s HP-UX. Sun’s Solaris SGI’s IRIX Apple’s MAC OS X Unix Variants: Linux, BSD, …

Why Learn Unix/Linux? Unix/Linux commonly used on computer “servers”: Web servers Database servers Supercomputers/Clusters Over 50% of servers in corporations run Unix or Linux A little Unix experience goes a long way, on the job, and looking for a job

Why Learn Unix/Linux? At UM/MCSR: TO RUN COMPUTATIONAL CHEM APPS! SAS is installed on UM’s Research Server: willow - more disk space than on your PC’s - run one calculation for several days Matlab is installed on willow. Mathematica on mimosa cluster for calculations too big for your PC or MAC Student programming assignments may be completed on MCSR/UM systems

Distributions of Linux Red Hat Enterprise Linux Fedora SUSE Linux Enterprise openSUSE Debian GNU/Linux Ubuntu Mandriva Linux Slackware Linux Gentoo

Components of Unix Shells Kernel Shells System Utilities End-User Utilities Development tools Docs Commands

MCSR Unix Workshops Will Cover: Shells Kernel Shells System Utilities End-User Utilities Development tools Docs Commands

Unix/Linux File System Similar to MS/DOS Files (Windows Command Prompt): Differences WindowsLinux Case doesn’t matterCase sensitive Spaces ok in filenamesSpaces not OK in names Backslash used in pathnamesForward slash in paths User “Administrator”User “root”

jsu tracct1 tracct2 r1311

Unix/Linux File Permissions