Ubuntu 16.04 and Matlab 2016a: MATLAB has encountered an internal problem and needs to close

There is some problem with matlab UI GPU-based rendering on nvidia as this is causing this problem

Stack Trace (from fault):
[ 0] 0x00007f5bbc4a024d /usr/lib/nvidia-361-updates/libGLX_nvidia.so.0+00344653

The workaround is to launch matlab without GPU rendering: opt/MATLAB/R2016a/bin/matlab -softwareopengl

Ubuntu: ssh to tor server

On the server:

Add this to /usr/tor/torrc HiddenServiceDir /var/lib/tor/sshd/
HiddenServicePort 22 127.0.0.1:22
Restart tor sudo service tor restart
Onion hostname file for the ssh service should be created sudo cat /var/lib/tor/sshd/hostname
Take note of the hostname
On the client:
Have tor browser running on the client.

Add this to ~/.ssh/config: host hidden hostname your_onion_hostname.onion
proxyCommand nc -x 127.0.0.1:9150 %h %p

Ubutnu 16:04: Time zone change

sudo dpkg-reconfigure tzdata

Ubuntu 16:04: Install Krusader with dependencies

sudo apt install krusader krename kdiff3 konsole kde-baseapps-bin Without kde-baseapps-bin, bookmarks manager does not work.

Ubuntu 16:04: wt-3.3.5 compile error

When compiling latest wt-3.3.5, the following compile errors can occure: usr/include/boost/core/ref.hpp:131:74: note: candidate: template const boost::reference_wrapper boost::ref(T&)
template BOOST_FORCEINLINE reference_wrapper BOOST_REF_CONST ref( T & t )

^
/usr/include/boost/core/ref.hpp:131:74: note: template argument deduction/substitution failed:
/tmp/wt-3.3.5/test/dbo/DboTest.C: In substitution of ‘template const boost::reference_wrapper
boost::ref(T&) [with T = dbo_test26::test_method()::CheckExpected]’:
/tmp/wt-3.3.5/test/dbo/DboTest.C:2381:76: required from here
/tmp/wt-3.3.5/test/dbo/DboTest.C:2381:76: error: template argument for ‘template const
boost::reference_wrapper boost::ref(T&)’ uses local type ‘dbo_test26::test_method()::CheckExpected’ model->dataChanged().connect(boost::bind(boost::ref(checkExpected),
^
/tmp/wt-3.3.5/test/dbo/DboTest.C:2381:76: error: trying to instantiate ‘template const
boost::reference_wrapper boost::ref(T&)’

This can be fixed, by compiling with C++11 mode: cmake ../ -DWT_CPP_11_MODE:STRING="-std=c++11"

To specify prefix folder (i.e., installation folder): cmake ../ -DWT_CPP_11_MODE:STRING="-std=c++11" -DCMAKE_INSTALL_PREFIX:PATH="/opt/wt"

To build wt libraries as static (i.e. *.a), do: cmake ../ -DWT_CPP_11_MODE:STRING="-std=c++11" -DCMAKE_INSTALL_PREFIX:PATH="/opt/wt" -DSHARED_LIBS=0

Ubuntu 16:04: Segmentation fault (core dumped), but no core file

Make core files to be located in the current working folder sudo service apport stop
ulimit -c unlimited

ImageMagick: Crop images in half verticly

Left halfmogrify -gravity West -crop 50%x100%+0+0 *.tiff Right halfmogrify -gravity East -crop 50%x100%+0+0 *.tiff

ImageMagick: remove alpha and flatten

mogrify -flatten -type Grayscale -alpha remove *.tiff

rsync: copy files with a given extensions

rsync -zarv --include="*/" --include="*.h" --exclude="*" --prune-empty-dirs /home/marcin/cpp/bitmonero ./test

SPSS: Automaticly change string variable to group/categorical variable

autorecode variables = TheStringVariable /into GroupNumber.