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Search & Replace in Multiple Files by reading a input file

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# 8  
Old 08-14-2013
Try like this:

while read a b c; do sed -e "s/$a/$c/g" R*; done < INP

If output looks good , use -i to edit the file directly ( can not undo ) .

cat INP:
value1 = url1
value2 = url2
value3 = url3

cat R1:


cat R2:

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QwtScaleArithmetic(3)						 Qwt User's Guide					     QwtScaleArithmetic(3)

QwtScaleArithmetic - Arithmetic including a tolerance. SYNOPSIS
#include <qwt_scale_engine.h> Static Public Member Functions static double ceil125 (double x) static double ceilEps (double value, double intervalSize) static int compareEps (double value1, double value2, double intervalSize) static double divideEps (double interval, double steps) static double floor125 (double x) static double floorEps (double value, double intervalSize) Detailed Description Arithmetic including a tolerance. Member Function Documentation double QwtScaleArithmetic::ceil125 (doublex) [static] Find the smallest value out of {1,2,5}*10^n with an integer number n which is greater than or equal to x Parameters: x Input value double QwtScaleArithmetic::ceilEps (doublevalue, doubleintervalSize) [static] Ceil a value, relative to an interval Parameters: value Value to ceil intervalSize Interval size See also: floorEps() int QwtScaleArithmetic::compareEps (doublevalue1, doublevalue2, doubleintervalSize) [static] Compare 2 values, relative to an interval. Values are 'equal', when : $ Parameters: value1 First value to compare value2 Second value to compare intervalSize interval size Returns: 0: if equal, -1: if value2 > value1, 1: if value1 > value2 double QwtScaleArithmetic::divideEps (doubleintervalSize, doublenumSteps) [static] Divide an interval into steps. $stepSize = (intervalSize - intervalSize * 10e^{-6}) / numSteps$.PP Parameters: intervalSize Interval size numSteps Number of steps Returns: Step size double QwtScaleArithmetic::floor125 (doublex) [static] Find the largest value out of {1,2,5}*10^n with an integer number n which is smaller than or equal to x. Parameters: x Input value double QwtScaleArithmetic::floorEps (doublevalue, doubleintervalSize) [static] Floor a value, relative to an interval Parameters: value Value to floor intervalSize Interval size See also: floorEps() Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 5.2.2 Mon Aug 1 2011 QwtScaleArithmetic(3)

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