i want to replace some words in a file. In words are present in whole file. But starting of each line in file is by different word. so i am using a file in which first character of line at which i wanna do replacement is written and along with it replaced word is given ( i name it match file) . i m using following logic. but here is problem with it that i don't know in which line the first match-replace combination in match file is present in input file. so i need to reopen this file. In this way code will copy all the lines in new file that i m forming with this. 

 #!/usr/bin/perl
use warnings;
my $source = shift @ARGV;
my $destination = shift @ARGV;
my $matchfile=shift @ARGV;

open(OUT, '>', $destination) or die $!;
open(MF, '<', $matchfile) or die $;
while(<MF>)
{
    @DATA=split(/ /,$_);
    $matcher=$DATA[0];
    $replacer=$DATA[1];
open(IN, '<', $source) or die $!;
while(<IN>)
{
    if($_=~/^$matcher/)
    {
        if(s /legend/$replacer/)
        {
        print OUT $_;
        }
    }
    else
    {   print OUT $_;
    }
    
}
}

close IN;
close OUT;
close MF;

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In reply to need help in editing multiple word in a file by vkp

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