Marginalia

2020-09-09






2014-12-14

Remote access to mercurial repository

When allowing others to clone a mercurial repository, it is important to organize easy and stable access, which works as well from behind a firewall. We discuss two methods from our daily pratice which allow to organize this.

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2014-12-13

Secure Shell ssh - the Swiss Army Knife of Remote Access

Survival in the wild is no problem if you carry your Swiss Army Knife. So is survival in the internet – provided you know ssh.

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2014-11-13

Bringing Fortran, C and C++ together

Most compiler suites come today with the (not so) holy trinity of widespread compiled languages: Fortran, C and C++. Here are some remarks on using them together.

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2014-11-10

Changing compilers, flags etc. in cmake

CMake does a great job in auto-detecting your system. But what to do if you want to be in control of the choice of compilers, flags etc ? Use toolchain files.

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2014-11-10

File differencing for numerical output

In software unit tests we have the problem that the usual diff command fails when comparing output files generated by numerical algorithms. Tolerable numerical differences in the output are still hard differnces. Numdiff may help.

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2014-10-30

Version control with mercurial

The main open source choices for source code version control systems (VCS) are the centralized VCS CVS and subversion (svn), and the distributed VCS git and Mercurial (hg).

I am taking sides with mercurial, as it is distributed and has a more intuitive command line interface and better portability than git.

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2014-10-30

Yet another attempt on a cmake intro…

CMake is the current fashion in build systems. It is not perfect (e.g. the learning curve) but better than its predecessors.

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2014-10-02

Stabilität von Differentialgleichunssystemen mit Javascript und JSXGraph

Hier ein weiteres Beispiel aus besagter Vorlesung.

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2014-10-01

Räuber und Beute mit Javascript und JSXGraph

Für meine Vorlesung “partielle Differentialgleichungen für Ingenieure” hatte ich überlegt, einige interaktive Demos bereitzustellen.

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2003-10-16

Arbeiten mit ssh - eine Übersicht für den Nutzer

Dieses Dokument soll einige praktische Empfehlungen für die Arbeit mit ssh geben. Es erhebt keinen Anspruch auf Vollständigkeit. Es soll vielmehr eine praktische Anleitung für den weniger bewanderten Netznutzer sein.

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