if the script is not run with -i, you can do this: 
{
    local ($^I, @ARGV) = ('.bak', @files);   
    while (<>) {
        s/this/that/;
        print;       
    }
}

[download]
It's also useful if you ARE running with -i and wish to use a different extension for the backup file.

Error: Keyboard not attached. Press F1 to continue.

In reply to Re: Inplace Editing by $code or die
in thread Inplace Editing by tachyon

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