Murat Kendir's Knowledge "Basement"*

"We found a hut and dry wood here. Others will come. Give them rice, salt and matches, Captain."

from the movie "Dersu Uzala", Akira Kurosawa, 1975

Email me

Who am i?

Murat Kendir.

I was born in Germany and spent my youth and most of my professional career in Turkey. I completed a Bachelor's degree in Geomatics Engineering and a Master's degree in Geographic Information Technology at Istanbul Technical University. I have gained work experience in both practical and information technology fields. I am currently working as a researcher at the Technical University of Munich. I am married and have one child.

In many of my other interests I like to remain an amateur. I believe in learning to learn. Living is a serious business. But there should always be time for good music or a good coffee.

What is the purpose?

  • organizing my knowledge/information/data
    • to be more nerd about these things.
  • That's all. Enjoy the website!

Latest Notes

BPython

  • Switch to Vi [F7]
  • PasteBin [F8]
  • Undo [Ctrl + R]
  • Redo [Ctrl + G]
  • Clear Line [Ctrl + U]

Vi Editor

  • Delete Lines [d + d]
  • Save & Quit [:wq]
  • Save & (force) Overwrite & Quit [:wq!]

Using BPython & Vi together

Row Column 1 Column 2 Column 3 Column 4
1 cos(ψ)·cos(θ)·sx [cos(ψ)·sin(θ)·sin(φ) − sin(ψ)·cos(φ)]·sy [cos(ψ)·sin(θ)·cos(φ) + sin(ψ)·sin(φ)]·sz tx
2 sin(ψ)·cos(θ)·sx [sin(ψ)·sin(θ)·sin(φ) + cos(ψ)·cos(φ)]·sy [sin(ψ)·sin(θ)·cos(φ) − cos(ψ)·sin(φ)]·sz ty
3 −sin(θ)·sx cos(θ)·sin(φ)·sy cos(θ)·cos(φ)·sz tz
4 0 0 0 1

Affine Transformation (Combined Formula) 

for file in *.mp3; do
    ffmpeg -i "$file" -c:a libvorbis -vn "${file%.mp3}.ogg"
done

High Quality Alternative: 

for file in *.mp3; do
    ffmpeg -i "$file" -c:a libvorbis -q:a 5 -vn "${file%.mp3}.ogg"
done

batch convert mp3 to ogg wo loss