SED (regular expression) problem --- Post: 302421826

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Top Forums Shell Programming and Scripting SED (regular expression) problem --- Post 302421826 by bluesmodular on Sunday 16th of May 2010 02:08:34 PM

05-16-2010

Registered User

SED (regular expression) problem...

Thanks -

Actually, I didn't realize this would make a difference, but I have a parent directory called [myExamples] that contains my scripts (prep) and (run_example).

I have already made subdirectories of [myExamples], and I can run (prep) to copy (run_example) into each subdirectory.

(run_example) has a few lines that look similar to Line 187, plus a lot of other hulababoos...

The problem is to automatically replace Line 187 of (run_example) in each subdirectory, with a different value of $bulksize (see top message)...

Below is a snippet of (prep) -

Code:

bulksize=`expr 6.00` #This line works
half=$(echo "scale=2; $bulksize / 2" | bc) #This line works
for i in `ls -d */`; 
    do    
    CORRECTED LINE HERE
    half=$(echo "scale=2; $half + 0.05" | bc) # This line works
    bulksize=$(echo "scale=2; $half * 2" | bc) # This line works
done;

Last edited by bluesmodular; 05-16-2010 at 03:20 PM..

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bcpow

BCPOW(3)								 1								  BCPOW(3)

bcpow - Raise an arbitrary precision number to another

SYNOPSIS

       string bcpow (string  $left_operand, string  $right_operand, [int  $scale])

DESCRIPTION

	Raise $left_operand to the power $right_operand.

PARAMETERS

	      o $left_operand
		- The left operand, as a string.

	      o $right_operand
		- The right operand, as a string.

	      o $
		scale  -This  optional	parameter  is used to set the number of digits after the decimal place in the result. You can also set the
		global default scale for all functions by using bcscale(3).

RETURN VALUES

	Returns the result as a string.

EXAMPLES

       Example #1

	      bcpow(3) example

	      <?php

	      echo bcpow('4.2', '3', 2); // 74.08

	      ?>

NOTES

       Note

	      bcpow(3) may return a result with fewer digits after the decimal point than the $scale parameter would indicate.	This  only  occurs
	      when the result doesn't require all of the precision allowed by the $scale. For example:

	      Example #2

		     bcpow(3) scale example

		     <?php
		     echo bcpow('5', '2', 2);	  // prints "25", not "25.00"
		     ?>

SEE ALSO

       bcpowmod(3), bcsqrt(3).

PHP Documentation Group 														  BCPOW(3)