Re: Discussion: New logging features

[Thibaud Kehler <nmap-dev () t3 sy gs>]

I submitted some pull requests on Github.

> 1. Log file overwrite
>
> By default Nmap overwrites log files without warning or asking for
> permission. Too frequently have I lost my output and was forced to redo
> a scan -- which may take a long time sometimes.
>
> I see two ways to solve this problem:
>  A. New option --overwrite
>    Abort with an error when overwriting an existing file, unless
>    the flag option --overwrite has been set.
>    Pro: very safe
>    Con: Not compatible with exiting scripts and wrapper
Pull Request #1978 implements variant A, but could easily be modified to
realize variant B.


> 2. strftime-like conversions in the filename
>
> strftime has many more conversions, e.g. %F for the ISO 8601 date
> format, and I would love to use them in Nmap directly.

After digging into the safety of filenames, I believe that most features
of strftime have been omitted in order to achieve compatibility with
Windows OS (no colons or slashes allowed). In my opinion, however, it is
crucial to at least support %F for ISO 8601 date format, which is
commonly used to order files by date. I added this new option with pull
Request #1979.

Furthermore, I updated the English and German docs to the new behavior.

Feel free to review and merge my contribution.

-- 

Thibaud Kehler, M.Sc.
IT Security Consultant

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