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783.Regular expression replace -- How to replace a number with another number in same text file?

User: mike -- 2011-05-19          << 782  784 >>
Hits: 2105
Type: Regular expression replace   
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How to find number replace in text?
I have many files in a folder,I need to batch find bbb's number replace to aaa's
Input Sample:
aaa 1
bbb 5
Output Sample:
aaa 5
bbb 5
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
Assume the location of line "aaa" and "bbb" are not fixed, following procedure will take first number of bbb's, and update all numbers of aaa's.
1. open "Tools->Batch Runner" window
2. drag multiple files from Windows file browser to "Batch Runner" window
3. click "Fast Replace" button
4. click "Add" to add a rule
* set "search" to:

* set "replace" to:

* click "ok"
5. click "Start", all files will be changed.

1. Please make backup to avoid mis-operation
2. If aaa and bbb has fixed location, just search: 
replace with:

Screenshot 1:  Fast_Replace_Window

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