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Full Discussion: sed or awk command to replace a string pattern with another string based on position of this string
Top Forums Shell Programming and Scripting sed or awk command to replace a string pattern with another string based on position of this string Post 302656067 by guruprasadpr on Thursday 14th of June 2012 07:56:33 AM
Old 06-14-2012
When I ran the same command for the file specified, it is coming properly.


Code:
$ awk -F, '/INSERT/{for(i=1;i<=NF;i++){if ($i ~ /lastModified/){x=i;print;getline;break;}}}{y="0000-0000 00:00:00";sub(/[-0-9: ]+/,y,$x);}1'  OFS=, file
INSERT INTO `Table44` (`id`, `action`, `date`, `description`, `modifiedId`, `object`, `performedById`, `schemaDifference_blob_reserved`, `schemaDifference_reserved`, `sourceIPAddress`, `zoneId`, `lastModified`) VALUES
(1,'Change','2011-05-05 00:00:00','User Account Updated',3,'Account',1,NULL,NULL,'',1,'0000-0000 00:00:00');


Make sure your file should be in the format as you had specified in the sample earlier like:
Code:
INSERT INTO . ............ VALUES
(.....................),
(.....................);

not all in the same line.
 

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LEARN ABOUT PHP

mb_eregi_replace

MB_EREGI_REPLACE(3)							 1						       MB_EREGI_REPLACE(3)

mb_eregi_replace - Replace regular expression with multibyte support ignoring case

SYNOPSIS

       string mb_eregi_replace (string	$pattern, string  $replace, string  $string, [string  $option = "msri"])

DESCRIPTION

	Scans $string for matches to $pattern, then replaces the matched text with $replacement.

PARAMETERS

	      o $pattern
		- The regular expression pattern. Multibyte characters may be used. The case will be ignored.

	      o $replace
		- The replacement text.

	      o $string
		- The searched string.

	      o $option
		-$option has the same meaning as in mb_ereg_replace(3).

RETURN VALUES

	The resultant string or FALSE on error.

NOTES

       Note

	      The  internal  encoding  or the character encoding specified by mb_regex_encoding(3) will be used as the character encoding for this
	      function.

       Warning

	      Never use the e modifier when working on untrusted input. No automatic escaping will happen (as  known  from  preg_replace(3)).  Not
	      taking care of this will most likely create remote code execution vulnerabilities in your application.

SEE ALSO

       mb_regex_encoding(3), mb_ereg_replace(3).

PHP Documentation Group 												       MB_EREGI_REPLACE(3)
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