how to substitute a word in a file by perl

ghosh123 has asked for the wisdom of the Perl Monks concerning the following question:

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Re: how to substitute a word in a file by perl by kcott (Archbishop) on Aug 31, 2013 at 13:41 UTC
G'day ghosh123, You've been here long enough to know not to do this sort of thing. Just so you're in no doubt about this: Read "Do Your Own Work" in How (Not) To Ask A Question to see what's wrong with this posting. Read How do I post a question effectively? to see how you should have gone about this. I have downvoted your node. -- Ken	[reply]
Re: how to substitute a word in a file by perl by hdb (Monsignor) on Aug 31, 2013 at 13:36 UTC
And what exactly are you having problems with? Read the file line by line, do a global substitution of wood versus food, write into a temp file. Delete input and rename temp file to original name.	[reply] [d/l]
Re: how to substitute a word in a file by perl by ww (Archbishop) on Aug 31, 2013 at 13:35 UTC
I will provide code upon receipt of (currency only) USD100.00. If you really don't want to learn, please stop posting "gimme'" nodes. ghosh123 should apologize to all those electrons which were inconvenienced by the creation of the parent post.	[reply]
Re: how to substitute a word in a file by perl by Anonymous Monk on Aug 31, 2013 at 13:37 UTC
See get n lines before or after a pattern, Re: modifying a file with regex!, perlintro, open, readline, rename, Re^5: Remove a Line, perlintro, open, close, readline, rename, Re: Rewriting into file, Re^2: Write to existing file with character insert	[reply]