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lecture18_inf201_fall2010

lecture18_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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11/29/06 :: Unix and Networking :: Class 8 Sairam Chinnam Working with the Shell Shell’s major functions – Command execution – Filename substitution – I/O redirection and pipes – Environment control – Background processing – Shell scripting – History and alias support
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11/29/06 :: Unix and Networking :: Class 8 Sairam Chinnam Working with the Shell Display message – echo command – % echo This is a test. – the escape characters (\n, \t, \b, \r, \c) – $ echo hi, “\n”welcome – % printf “hi, \n Welcome\n” Ignore wildcards’ special meanings: \, “”, ‘’ – % rm file? – % rm file\? – % echo “2 > 1” – % echo ‘&, ^, %’
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11/29/06 :: Unix and Networking :: Class 8 Sairam Chinnam Shell Variable Basics • Items set with specific values, to control or customize environment
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