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Re: Read last expression in a file?

• To: mathgroup at smc.vnet.net
• Subject: [mg116053] Re: Read last expression in a file?
• From: Heike Gramberg <heike.gramberg at gmail.com>
• Date: Mon, 31 Jan 2011 03:22:57 -0500 (EST)

If you are working on unix/linux/os x and your output file contains one expression per line, you could use something like

ReadList["!tail outputfile", Expression]

where outputfile is the name of your output file. This basically calls the external command tail which is a program on unix/linux that displays the last few lines of a file.

I'm not familiar with windows so I don't what the windows equivalent of tail would be.

Heike.

On 30 Jan 2011, at 00:43, Ramiro wrote:

> Hello,
>
> I wrote a program that generates a lot of Mathematica output.
>
> Now I need to restart it using the very last expression of such output
> as the new input.   However, I can't find a way to only read the last
> expression in a file, something like a Read that would start at the
> end.  It would be too time consuming and perhaps not enough memory in
> my computer to read the entire file.
>
> Any suggestions?
>
> Thanks,
> Ramiro
>