Set permanent environment variables in Google Colab

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How do you set environment variables in Colab that persist after a runtime restart?

I have tried:

  1. Changing ~/.bashrc
!echo "LD_LIBRARY_PATH=/usr/local/nvidia/lib:/usr/local/nvidia/lib64:/opt/ros/melodic/lib" >> /etc/environment
  1. Adding line to /etc/environment
!echo "source /opt/ros/melodic/setup.bash" >> ~/.bashrc

Questions that don't have the answer:

Setting environment variables in Google Colab : All methods listed here do not persist after runtime restart

google-colaboratory environment-variables
1 Answers

You can make it permanent, even after restart.

Just write a startup file. It will be run everytime jupyter restart. (but not if factory reset)

%%file /root/.ipython/profile_default/startup/startup.py
import os
os.environ['LD_LIBRARY_PATH']='/usr/local/nvidia/lib:/usr/local/nvidia/lib64:/opt/ros/melodic/lib'
user_67290100
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