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Full Discussion: average of distinct values with awk
Top Forums Shell Programming and Scripting average of distinct values with awk Post 302481023 by saif on Thursday 16th of December 2010 11:52:15 AM
Old 12-16-2010
average of distinct values with awk
Hi guys, I am not an expert in shell and I need help with awk command. I have a file with values like

200 1 1
200 7 2
200 6 3
200 5 4
300 3 1
300 7 2
300 6 3
300 4 4

I need resulting file with averages of col 2 and 3 based on values on col 1. So the output should be like

200 4.5 2.5
300 5 2.5

I would really appreciate any help.

Thanks,
 

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LEARN ABOUT HPUX

hp9000s500

machid(1)						      General Commands Manual							 machid(1)

NAME

       machid: hp9000s200, hp9000s300, hp9000s400, hp9000s500, hp9000s700, hp9000s800, hp-mc680x0, hp-pa, pdp11, u370, u3b, u3b10, u3b2, u3b5, vax
       - provide truth value about processor type

SYNOPSIS

DESCRIPTION

       The following commands return a true value (exit code 0) if the a processor type matches the command name.  Otherwise a false  value  (exit
       code  nonzero)  is returned.  These commands are commonly used within makefiles and shell procedures to improve portability of applications
       (see make(1)).

				       +-----------+-------------------------++--------+--------------------------+
				       |Command    | True for		     ||Command | True for		  |
				       +-----------+-------------------------++--------+--------------------------+
				       |hp9000s200 | Series 200 	     ||pdp11   | PDP-11/45 or PDP-11/70   |
				       |hp9000s300 | Series 300 	     ||u3b     | 3B20 computer		  |
				       |hp9000s400 | Series 400 	     ||u3b2    | 3B2 computer		  |
				       |hp9000s500 | Series 500 	     ||u3b5    | 3B5 computer		  |
				       |hp9000s700 | Series 700 	     ||u3b10   | 3B10 computer		  |
				       |hp9000s800 | Series 800 or 700	     ||u370    | IBM System/370 computer  |
				       |hp-mc680x0 | Series 200, 300, or 400 ||vax     | VAX-11/750 or VAX-11/780 |
				       |hp-pa	   | Series 700 or 800	     ||        |			  |
				       +-----------+-------------------------++--------+--------------------------+
EXAMPLES

       Given a shell script that must behave differently when run on an HP 9000 Series 700 or 800 system, select the correct code  segment  to	be
       executed:

WARNINGS

       always  returns	true on both Series 800 and Series 700 systems.  Therefore, when using this command in scripts to determine hardware type,
       always use both and in the appropriate sequence to ensure correct results (see

       machid(1) will no longer provide support for future machines beyond the Series 800 and Series 700 systems.  Decisions should  be  based	on
       the hardware and software configuration information returned by getconf(1).

SEE ALSO

       getconf(1), make(1), sh(1), test(1), true(1).

																	 machid(1)
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