When you say the word "IT" do you really mean "IT" as a word? It is important:
use strict;
use warnings;

while(<DATA>) {
    print if /IT/
}
__DATA__
This is IT for now
Nothing of interest here
Looping is used for ITeration

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gives:
This is IT for now
Looping is used for ITeration

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However if we use the word boundary anchor \b:
while(<DATA>) {
    print if /\bIT\b/
}

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we only get
This is IT for now

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In reply to Re^3: Delete line by cdarke
in thread Delete line by Anonymous Monk

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