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Full Discussion: find string and get the rest of the line in a pipe delimited file
Top Forums UNIX for Dummies Questions & Answers find string and get the rest of the line in a pipe delimited file Post 302598790 by Corona688 on Wednesday 15th of February 2012 12:18:51 PM
Old 02-15-2012
I think this is closer to what you want, and far more efficient than running grep 9,000 times to process 9,000 different matches. It loads the entire mapping file in at once into an associative array, then reads input_string.txt line by line, printing the matching number if it finds it.

Code:
awk -F'|' 'BEGIN { while(getline<"mapping.txt") A[$1]=$2 }; A[$1] { print A[$1] }' input_string.txt

This User Gave Thanks to Corona688 For This Post:
kokoro
 

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LEARN ABOUT DEBIAN

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

5.10								    08/01/2011								 ENVEXT(1)
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