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Full Discussion: Loop through files in a directory
Top Forums Shell Programming and Scripting Loop through files in a directory Post 302902971 by ali.seifaddini on Friday 23rd of May 2014 09:08:52 AM
Old 05-23-2014
Loop through files in a directory
Hello

How do I loop through files in a specific directory ?

This script is not working!

Code:
#! /bin/bash
FILES=/usr/desktop/input/*
For f in $FILES;
do
awk '-v A="$a" -v B="$b" {$6=($1-64)/2 ;$7=((10^($6/10))/A)^(1/B) ; print}' OFS="\t" $f > /root/Desktop/output/$f.txt;
done

Orginal txt file:

Code:
$1      $2            $3             $4
74   3.99166 101.37082  2.000
74   3.99166 101.37834  2.000
75   3.98416 101.37082  2.000
75   3.98416 101.37834  2.000
81   3.96916 101.29571  2.000
  0   3.96166 101.28820  2.000
 82   3.96166 101.29571  2.000
 85   3.96167 101.31073  2.000


Expected result:

Code:
$1         $2             $3                $4                  $5        $6
74	3.99166	101.37082	2.000		5	0.0748783
74	3.99166	101.37834	2.000		5	0.0748783
75	3.98416	101.37082	2.000		5.5	0.0804649
75	3.98416	101.37834	2.000		5.5	0.0804649
81	3.96916	101.29571	2.000		8.5	0.12391
0	3.96166	101.28820	2.000		-32	0.000364633
82	3.96166	101.29571	2.000		9	0.133155
85	3.96167	101.31073	2.000		10.5	0.165237

Thanks in advance
 

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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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