LINUX FOR BEGINNERS Because everyone needs Fundamentals WEEK #3of 8: Getting around the first time to Shell

Week #3 Major Topics Introduction to Cloud and Virtualization, Filesystem Basics What is the “SHELL” Basic Command Line Skills Review and Exercises

Introduction to Cloud and virtualization Virtualization- separates physical infrastructure to create various dedicated resources. It is the fundamental technology that powers the cloud computing Vmware,citrix, rhev, oracle virtualbox Cloud computing – the delivery of shared computing service, software or data – as a service and on- demand through the internet Amazon, Rackspace, google, local company, etc. virtualization and cloud computing work together to provide different types of services, as is the case with private clouds.

Filesystem Basics / (root level) etc dev var home usr boot /home/ddadula/documents/file.txt Documents Music Desktop ddadula Ktrinidad aregencia

What is a shell? Shell is an command language interpreter that executes commands read from the standard input device (keyboard) or from a file.

Basic Command line 1. Basic shell and command line syntax 2. How to use help in Linux

Basic shell and command line syntax We need to cover: i. commands, options, arguments ii. globbing iii. Quoting IV. Variables

commands, options, arguments Ls - list LS -L /home/…… Cat - Concatenate Echo – prints on the screen Cd – change directory Which - which binary can I run? Ls; ls - command after a command History

Globbing and QUOTING & variables Ls *.txt - * any charcter Ls file?.txt - any single character Quoting " “ VARIABLE=value Echo varialble=value Echo $PATH – global variables

Variables (and the PATH variable) Echo $PATH - directories : directory - special variable that tells the shell where to look for specific commands

How to use help in Linux? i. Man – most commonly used ii. Info – more detailed iii. man pages - /usr/share/man

Q & A Thank you!