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Installing Matlab on Archlinux

bradomynLeave a comment

Download the Linux package from Mathworks.

  1. Before installing I’ve checked the Archlinux wiki:

https://wiki.archlinux.org/index.php/MATLAB

2. Just trying to execute the install script I was getting this error:

terminate called after throwing an instance of 'std::runtime_error'
  what():  Unable to launch the MATLABWindow application

3. I decided to install Matlab using the AUR package:

https://aur.archlinux.org/packages/matlab#comment-735882

4. Installed all dependencies from the AUR package

5. Still some problems…. So checking the comments from the AUR package, I found this comment:

While trying to install r2020a I had this error after executing ./install:

terminate called after throwing an instance of 'std::runtime_error'
  what():  Unable to launch the MATLABWindow application

I solved this by installing libselinux (in AUR).

For the record: I found the missing dependency by executing ./bin/glnxa64/MATLABWindow.

Besides, it works without gtk2 (perhaps it now depends on gtk3).

https://aur.archlinux.org/packages/matlab#comment-735882

6. After installing libselinux I could execute the install script.

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Moving The Ctrl Key

bradomynLeave a comment

Two years ago I spent some weeks debugging a VME bus VHDL core using a logic analyzer. Looking for the probes in the logic analyzer suitcase I found “Happy Hacking Keyboard Lite 2”. It makes sense to ship a logic analyzer with such a compact keyboard, and since I’ve used and I’m in love with the keyboard. There was only a “problem”, the Ctrl Key and Caps key were swapped. After  a couples of ours I got used to typing with this layout. Since then anytime that I’m using a different keyboard, I swap immediately the keys:

Happy Hacking Keyboard Lite 2

1-25-07-hhkblite2_black

http://ergoemacs.org/emacs/swap_CapsLock_Ctrl.html

/usr/bin/setxkbmap -option ctrl:swapcaps

If you want the changes persistent you can use xmodmap, it is an utility for modifying keymaps and pointer button mappings in Xorg. Here it is the .Xmodmap:

 ! Swap Caps_Lock and Control_L
 remove Lock = Caps_Lock
 remove Control = Control_L
 keysym Control_L = Caps_Lock
 keysym Caps_Lock = Control_L
 add Lock = Caps_Lock
 add Control = Control_L

I got the idea from this super user post

Yet, I should add a udev rule to swap the keys when I connect a keyboard to the laptop, I will post the rule and post

For Windows

Remap Caps-Lock key to Ctrl in Windows 7/8

  • Press Windows key + R and type regedit.exe
  • Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout
  • Create new entry with type Binary value named: Scancode Map
  • Modify value to: 
    02 00 00 00 1D 00 3A 00
00 00 00 00```
  • Restart computer

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remap-capslock-to-ctrl-in-windows.md

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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,02,00,00,00,1d,00,3a,00,00,00,00,00

view raw

Turn CAPSLOCK to Ctrl.reg

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https://www.lifewire.com/remap-keyboard-in-windows-10-5181178

https://support.microsoft.com/en-us/topic/how-do-i-reassign-hot-keys-for-my-keyboard-703f897c-ad72-db5d-8e64-0928873d712f

http://xahlee.info/emacs/emacs/swap_CapsLock_Ctrl.html

http://xahlee.info/mswin/autohotkey_swap_capslock.html