Re: Extract last email from an email file (mbox format)

On Sun May 29 2016 14:11:24 Xu Wang	<[email protected]> said:
> 
>> 3.   It is fast.
> 
> Unfortunately not for me.
> 
> time formail  -s  tee oneMessageOnly < theBigBox
> 
> real 0m24.019s
> user 0m3.376s
> sys 0m4.484s
> 
> As mentioned, my file is huge:
> $ wc -l theBigBox
> 2171183 theBigBox

Well, 24 seconds to process 2 million lines of largely unstructured text is pretty fast. You could make it faster with a faster disk, of course.

The REAL solution is not to have an mbox file with over 2 million lines.

There is *no* reason to use mbox over maildir. It is inefficient and fragile.

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