lecture19_inf201_fall2010

lecture19_inf201_fall2010 - IINF201 IINF201(Fall 2009 Intro...

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IINF201 (F ll 2009) IINF201 (Fall 2009) Intro. to Info. Technologies Department of Informatics University at Albany – SUNY Lecture From: Sairam Chinnam, INF 523 Fall 2006 Original Source: Af l A i (2002) UNIX U b d d A B i i A h 4th Editi Afzal, Amir, (2002), UNIX Unbounded: A Beginning Approach, 4th Edition, Prentice Hall.
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12/03/06 :: Unix and Networking :: Class 9 Sairam Chinnam Introduction to Shell scripting • Shell script – a text file that contains a series of commands, a command language • Why use shell script • Easy to debug and modify, but take longer to run than compiled language • When you run a shell script, each command in the script is passed to shell to execute, one at a time • Bourne shell (sh) is most often used for shell scripting
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12/03/06 :: Unix and Networking :: Class 9 Sairam Chinnam Shell Programming Basics Create the shell scripts – use a text editor (vi or emacs or pico) or cat command Display scripts – cat or more command How to run a shell script • Invoking script with shell (sh, bsh, csh) $ sh example1 • Executing script as a command itself Make script executable – using chmod command $ chmod u+x example1 $ example1
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