Tuesday, October 20, 2015

Linux Notes

REMEMBER: Never let Linux installation create partitions. Not in the past, not now, and not in the future. Never let Linux installation decide where to put the boot manager, and never let Linux installation decide which partitions to use.


For Texworks spelling, the dictionaries .aff and .dic should be in:
/usr/share/myspell/dicts

sudo apt-get update; sudo apt-get install gnome-session-fallback

gsettings set org.gnome.desktop.wm.preferences button-layout 'menu:minimize,maximize,close'

sudo apt-get install compizconfig-settings-manager


Theme: Radiance.

Keyboard shortcuts:

Preferences, CompizConfig Settings Manager, Grid.
Preferences, CompizConfig Settings Manager, General Options.

Preferences, Keyboard.

File: /etc/default/keyboard.

XKBMODEL="pc105"
XKBLAYOUT="dk"
XKBVARIANT=""
XKBOPTIONS="numpad:microsoft"


File: .xbindkeysrc.

sudo apt-get install wmctrl

sudo apt-get install xbindkeys

Latex:

texworks
texlive
texlive-latex-extra


hosts:

Remember that. Just visted b.dk without.

More:

sudo apt-get install stunnel4
(Have problems in Ubuntu 16.04 64-bit with stunnel4 version  5.30)

.bashrc (editor)
/etc/rc.local (tunnel)


More (some may not be valid):

sudo apt-get install mc
sudo apt-get install erlang-base
sudo apt-get install texlive-latex-extra
sudo apt-get install ghc
sudo apt-get install udisks
sudo apt-get install dosbox
sudo apt-get install gedit-plugins
sudo apt-get install hlint
sudo apt-get install hlint
sudo apt-get install cabal-install
sudo apt-get install r-base-core
sudo apt-get install texlive-lang-danish
sudo apt-get install hunspell

sudo apt-get install ttf-mscorefonts-installer

To accept license: tab enter

To enable \usepackage[danish]{babel} this may be needed:
sudo apt-get install texlive-lang-european

sudo apt-get install apache2

Run disper at each X login to change graphics port:

gnome-session-properties
 


Thursday, October 8, 2015

Dumhedens triumf

Vort samfund blev skabt af mennesker, der kiggede på papir.

Det vil nu blive destrueret af folk, der kigger på skærme.

Portoen for et brev stiger fra 10 til 19 kroner.

Wednesday, August 19, 2015

Maple Notes

CrossProduct is different using LinearAlgebra and VectorCalculus, or vectors are shown differently. Also, VectorCalculus redefines the +  sign etc.

Wednesday, August 12, 2015

SSD disk failure

Brand: Kingston

Model: KINGSTON SV300S37A240G

Firmware revision: 527ABBF0

A user password was set using the maximum level, and the disk removed from the system.

When inserted again, the disk would not respond to commands sent to the disk. The system did report the port as in use.

No physical violence and no known static electricity was involved.

Possible explanations:
  • Static electricity.
  • The small chock while removing and inserting the cables was enough to damage this disk.
  • A firmware bug.
 The disk was less than a year old, and had only been used moderately in a secondary system.

I assume that the failure was somehow related to the fact that the password was set or that the disk was removed and inserted.

Thursday, July 16, 2015

Folkeskolereformen

Citat fra citat på politiken.dk:

"Det er ikke alt i reformens indhold der bare er skidt, og jeg kan blive så træt af dem der bare skyder det hele ned (uden at give alternativer eller forklare hvorfor folkeskolen var så fantastisk før reformen).´"

Folkeskolen var ikke fantastisk før reformen. Derfor skulle man selvfølgelig have gjort den bedre i stedet for at gøre den dårligere.

Hvis vi siger at man i en tidsenhed lærer børnene 10 procent af hvad det ville være muligt at lære dem på den tid, så ville det have været ganske betydeligt mere effektivt at højne procenten til 15, end at forlange at børnene skal blive længere tid i skolen, ene og alene af hensyn til dem, der kun kan fyre floskler af.


ATA Security feature Set

Note that if a user password is set it may still be possible to unlock the disk using the default master password, which can be 32 characters of ASCII zero.

However, this is not possible if the user password was set using security level "Maximum".