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Top Forums Shell Programming and Scripting Replace first occurrence of a string in while loop Post 303034887 by RavinderSingh13 on Wednesday 8th of May 2019 09:45:27 PM
Old 05-08-2019
Hello baris35,

Very good that you have solved your question by yourself and appreciate that you have shared with us too, keep it up Smilie
You could better your solution by doing this:
Code:
awk '{sub("9030",$2+count++,$2)} 1'   Input_file

OR
Code:
awk '$2==9030{$2=$2+count++} 1'  Input_file

Output will be as follows.
Code:
aasasasas 9030 31wwo weopwoep
weerasas 9031 ew31wo ieopwoep
bbqqqsas 9032 ew3swo ieeopwoep
ccsaqpas 9033 ewiro o2opwoep

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
 

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ICONV_STRRPOS(3)							 1							  ICONV_STRRPOS(3)

iconv_strrpos - Finds the last occurrence of a needle within a haystack

SYNOPSIS
int iconv_strrpos (string $haystack, string $needle, [string $charset = ini_get("iconv.internal_encoding")]) DESCRIPTION
Finds the last occurrence of a $needle within a $haystack. In contrast to strrpos(3), the return value of iconv_strrpos(3) is the number of characters that appear before the needle, rather than the offset in bytes to the position where the needle has been found. The characters are counted on the basis of the specified character set $charset. PARAMETERS
o $haystack - The entire string. o $needle - The searched substring. o $charset - If $charset parameter is omitted, $string are assumed to be encoded in iconv.internal_encoding. If $haystack or $needle is not a string, it is converted to a string and applied as the ordinal value of a character. RETURN VALUES
Returns the numeric position of the last occurrence of $needle in $haystack. If $needle is not found, iconv_strrpos(3) will return FALSE. Warning This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function. SEE ALSO
strrpos(3), iconv_strpos(3), mb_strrpos(3). PHP Documentation Group ICONV_STRRPOS(3)
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