As a one-liner: 

c:\test>perl -ple"s[^(.*)$]{ $1 =~ m[DOG] ? 'DOG' : 'Not found' }e" ju
+nk.dat
DOG
DOG
Not found
DOG
Not found
DOG
DOG
DOG
DOG

[download]
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re: Replacing a search/not found pattern with a word by BrowserUk
in thread Replacing a search/not found pattern with a word by pinpe

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