Search and Replace text

Apologies for what is no doubt a simple question - I'm trying to help out IT and I'm not a programmer, although maybe one day...
Anyway, I'm going to need to read a text file, and search for a string in that text file and replace it. I see "replace" as a function but I'm not familiar with how to use it. Poking around I found <cffile action=append> and used that to add a line to a text document. (Just a notepad .txt)
Ultimately I'll need to unzip a folder, search and replace the string in a specific file in there, and then re-zip the file, but we'll get to that later. I managed to unzip a folder already, that's easy enough. Putting it all together is my current challenge.
I'm using ColdFusion Builder 2.0
Thanks for any help you guys can give.

file.txt: Contains several lines that all say "All Work And No Play Makes Jack A Dull Boy".
<cffile action="read" file="C:\file.txt" variable="myFile">
<cfset myFile = Replace(myFile,"Dull","Bored","all")>
<cffile action="write" file="C:\file.txt" output="#myFile#" addnewline="no" fixnewline="no">
<cffile action="read" file="C:\file.txt" variable="myNewFile">
<cfoutput>#myNewFile#</cfoutput>
^_^

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Would this approach work for you...
This is a very neat way edit a complex formula in a single cell....
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b) Do your Find and Replace, then
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Both are actually easy to find in the online help ...

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SubEdit: Should have thought of this already...
http://msdn.microsoft.com/en-us/library/ff837519(v=office.14).aspx

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Copy that to the clipboard and paste into the Replace field:
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Andrew, you are being so cruel, hardnuts indeed ;)
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If you're looking for something free/cheap that handles multi-line search and replace in source code, then there's always TextWranger if you're on a Mac:
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There are plenty of Windows equivalents, but none I've used extensively and could recommend. This one is free:
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Hi robowriter
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iOS 7 doesn't support the Adobe workhorse fonts I've most relied on for years, and arbitrarily changes them to iOS built-in fonts when I link my standard documents and templates to the iPhone, via iCloud. There's no apparent logic to how it does this; a Pages document in Minion Pro, a serif font, gets changed to the sans-serif Helvetica. Myriad Pro may come out in Times New Roman. I accept that the iPhone's limited number of fonts makes translation necessary, but does Pages offer a way in which I can search and replace inappropriately substituted fonts for more logical alternatives?

You noticed the first one yourself: the Found item list seems to randomly jump around the document -- I believe you are correct in your observation it may be due to the object construction order. That tells me, by the way, something about your lot numbers that tou didn't mention: your text is not one continuous long threaded story, but it's all or partially in disconnected etxt frames. The Found list does return everything inside a single story in the correct order, but it goes over each separate story in the order they were constructed.
The only solution is to gather all of your lot numbers, *re-sort* them according to the page number they appear on (and some sort of Worst Case Scenario is when you might have more than one lot number frame per page; in that case you also need to sort by textframe, top to bottom -- yet even worse is if you also may have these textframes side by side!).
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As for actually implementing the above I cannot be of any help with Applescript.
Once we're dealing with sorting I think you're much better off in Javascript anyhow.

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