Mathematics

“Mathematics, rightly viewed, possesses not only truth, but supreme beauty—a beauty cold and austere, like that of sculpture, without appeal to any part of our weaker nature, without the gorgeous trappings of painting or music, yet sublimely pure, and capable of a stern perfection such as only the greatest art can show.”


― Bertrand Russell, A History of Western Philosophy

Octave Demo Worksheet

This document contains notes from the February 2020 FLUX Linux User Group meeting.

Octave Demo

Yes, the answer is simple

I was being slightly tongue-in-cheek when I responded to a post that anyone in IT has probably seen a thousand times already:

Solve this:

My response?

How Linux admins do this:

3X = 24
X + Y = 25
Y - Z = 8

$ sudo yum -y install octave
[vertigo] $ octave

octave:1> A=[3, 0 , 0; 1, 1, 0; 0, 1, -1]
A =

   3   0 0
   1   1 0
   0   1 -1
octave:2> B=[24; 25; 8]
B =

   24
   25
    8
octave:3> A\B
ans =

    8
   17
    9

octave:4> sum(ans)
ans =  34


R for SysAdmins

R for System Administrators


Slides from an introductory R session from October 2015. It's dated with regard to the tools (e.g., I'd most likely use ELK or Prometheus/Grafana now) but the concepts are still valid.