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Full Discussion: Date format change in UNIX .dat file
Top Forums Shell Programming and Scripting Date format change in UNIX .dat file Post 302905000 by Akshay Hegde on Monday 9th of June 2014 05:02:56 AM
Old 06-09-2014
May be you are on solaris/sunos, try this

Code:
nawk 'BEGIN{
	    mon="JanFebMarAprMayJunJulAugSepOctNovDec"
	   }
	  {
	   if(match($0,/...[[:space:]]..[[:space:]]..../))
	   {
	     m = substr($0,RSTART,RLENGTH); split(m,A)
	     gsub(m,sprintf("%02d/%02d/%04d",(match(mon,A[1])+2)/3,A[2],A[3]) )
	   }
          }1
     ' file

---------- Post updated at 03:32 PM ---------- Previous update was at 03:30 PM ----------

Please Note : I assumed that date will be same and time is changing in your file
This User Gave Thanks to Akshay Hegde For This Post:
karthikengox
 

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LEARN ABOUT PHP

vfprintf

VFPRINTF(3)								 1							       VFPRINTF(3)

vfprintf - Write a formatted string to a stream

SYNOPSIS

       int vfprintf (resource  $handle, string	$format, array	$args)

DESCRIPTION

	Write a string produced according to $format to the stream resource specified by $handle.

	Operates as fprintf(3) but accepts an array of arguments, rather than a variable number of arguments.

PARAMETERS

	      o $handle
		-

	      o $format
		- See sprintf(3) for a description of $format.

	      o $args
		-

RETURN VALUES

	Returns the length of the outputted string.

EXAMPLES

       Example #1

	      vfprintf(3): zero-padded integers

	      <?php
	      if (!($fp = fopen('date.txt', 'w')))
		  return;

	      vfprintf($fp, "%04d-%02d-%02d", array($year, $month, $day));
	      // will write the formatted ISO date to date.txt
	      ?>

SEE ALSO

       printf(3), sprintf(3), sscanf(3), fscanf(3), vsprintf(3), number_format(3).

PHP Documentation Group 													       VFPRINTF(3)
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