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Top Forums UNIX for Dummies Questions & Answers Conditionally replace field content Post 302960290 by dovah on Friday 13th of November 2015 07:44:26 AM
Old 11-13-2015
Conditionally replace field content

Hello

I am trying to conditionally replace field content in $2 of input file if pattern is found in $4 of the same tab-separated input file. Currently, $2 is empty. I am trying (with no success):
Code:
awk -F "\t" 'BEGIN {FS="\t"}{ if ($4=="NO") $2=$2"NO"; print $0}' in > out

 

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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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