Monthly Archives: January 2017

Searching / Finding Files Containing Text

Posted on January 26, 2017 by quantitativenotes

grep -rnw helloWorld | grep src/ | cut -c -200

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What to do if logging in to Ubuntu Unity Desktop Fails

Posted on January 24, 2017 by quantitativenotes

I occasionally have an error where: – I try to log into Ubuntu Unity Desktop – I type in password successfully – After a few seconds the screen flickers and I am taken back to the login prompt. This problem … Continue reading →

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Using SQL Alchemy With New Server Bot

Posted on January 8, 2017 by quantitativenotes

Had a problem using SQLAlchemy in Python 3.5, as MySqlDB is not in Python 3.x. The solution is to specify pymysql in the connection string. E.g. mysql+pymysql://user:password@localhost/database To set the user, I went to the users and priveleges page of … Continue reading →

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Making Cuda Work With Numba

Posted on January 5, 2017 by quantitativenotes

Add these lines to .bashrc: export NUMBAPRO_LIBDEVICE=/usr/local/cuda/nvvm/libdevice export NUMBAPRO_NVVM=/usr/local/cuda/nvvm/lib64/libnvvm.so.3 More info: http://stackoverflow.com/questions/41496299/library-nvvm-not-found-when-trying-to-use-numba

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Example Crontab

Posted on January 4, 2017 by quantitativenotes

An example crontab for my Linode box, which runs scheduled Python scripts. The PATH and PYTHONPATH lines set environment variables. The scripts reside in /srv/, rather than /home, as I also use apache, which would have trouble reading scripts from … Continue reading →

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Ubuntu Things To Do After Install

Posted on January 1, 2017 by quantitativenotes

A list of things to do when installing my dev machine, which took me a week and a half to work out due to NVIDIA drivers causing boot issues. So I want to document it here. The purpose of the … Continue reading →

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Installing NVidia Drivers on Ubuntu

Posted on January 1, 2017 by quantitativenotes

https://elementaryforums.com/index.php?threads/howto-install-latest-nvidia-driver-on-linux-without-getting-black-screen.7/ The important bit: #Would you like to run the nvidia-xconfig utility to automatically update your X Configuration file so set the NVIDIA X driver will be used when you restart X? #no,no,No,NO,NO!!!

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