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Full Discussion: compare two files using awk
Top Forums Shell Programming and Scripting compare two files using awk Post 302367440 by gpaulose on Monday 2nd of November 2009 03:51:03 PM
Old 11-02-2009
compare two files using awk
Hi,

I want to compare two files using awk and write an output based on if the records matched.

Both the files are space delimitted.

File A:
Code:
8351 00000000000636 2009044 -00001.000
8351 00000000000637 2009044 -00002.000
8351 00000000000638 2009044 -00001.000
8351 00000000000640 2009044 -00003.000
8351 00000000000642 2009044 -00001.000
8351 00000000000650 2009044 -00001.000

File B:

Code:
8351 00000000000636 006
8351 00000000000637 002
8351 00000000000642 001

Output:
Code:
006 8351 00000000000636 2009044 -00001.000
002 8351 00000000000637 2009044 -00002.000
000 8351 00000000000638 2009044 -00001.000
000 8351 00000000000640 2009044 -00003.000
001 8351 00000000000642 2009044 -00001.000
000 8351 00000000000650 2009044 -00001.000

Basically, if the second column of File A matches with the second column of File B. I need to write the third column of file B and the complete line from File A.

If not matched I need to write 000 and then the complete line in File A.

I tried some awk commands.. but didnt work. This below code i wrote to get the matched record and write the third column and the file A. But the third column is not getting written.

Any help will be much appreciated.

Code:
awk '
NR==FNR{a[$2]=$2;next}
a[$2]{print a[$3] $0}' $ZEROSTOCK $INFILE > $INTEMP

Last edited by vgersh99; 11-02-2009 at 04:54 PM.. Reason: code tags, please!
 

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LEARN ABOUT LINUX

envext

ENVEXT(1)						  The Canonical Csound Reference						 ENVEXT(1)

NAME

       envext - Extracts the envelope of a file to a text file. .

SYNTAX

	   envext [-flags] soundfile

	   csound -U envext [-flags] soundfile

INITIALIZATION

       soundfile - Name of the input soundfile.

       The following flags are available for envext (The default values are stated in parenthesis):
	   -o fnam Name of output filename (newenv)
	   -w size (in seconds) of analysis window (0.25)

       The envext utility generates a text file containing time and amplitude pairs by finding the absolute peak within each window.

EXAMPLE

       Using the command (while in the manual directory):

	   csound -U envext examples/mary.wav

       will produce the a text file containing the following:

	     0.000   0.000
	     0.000   0.000
	     0.250   0.000
	     0.500   0.000
	     0.750   0.000
	     1.249   0.170
	     1.499   0.269
	     1.530   0.307
	     1.872   0.263
	     2.056   0.304
	     2.294   0.241
	     2.570   0.216
	     2.761   0.178
	     3.077   0.011
	     3.251   0.001
	     3.500   0.000

       Which shows the time for the peak amplitude within each measured window.

CREDITS

       Author: John ffitch

       1995

AUTHORS

       Barry Vercoe
       MIT Media Lab

	   Author.

       Dan Ellis
       MIT Media Lab,
		 Cambridge
		 Massachussetts

	   Author.

COPYRIGHT

5.07								    06/23/2009								 ENVEXT(1)
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