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help: perl command line, especially what does '%1.txt' mean

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Robert Qi

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help: perl command line

Hi,
Anyone can explain the below perl command line? .

c:\>perl -p -i[bak] -e "s/mybook/book/;" %1.txt

Especially, what does '%1.txt' mean?

Thanks in advance
Robert
 

Re: help: perl command line

:| oop, no one gives help, but fortunately I get the answer by myself.:D
 

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