Conda env share and migration

The passage mainly describes how you and your teammate can share the same conda environment on one system and how to restore your conda environment with the customized location.

For sharing on the Ubuntu system, you need to create a shared group for you and your teammate, then assign the conda folder with group access rights.

Reference: https://superuser.com/questions/280994/give-write-permissions-to-multiple-users-on-a-folder-in-ubuntu

sudo groupadd gcpgroup
sudo usermod -a -G gcpgroup <USER1>
sudo usermod -a -G gcpgroup <USER2>
sudo chgrp -R gcpgroup /path/to/conda
sudo chmod -R 770 /path/to/conda

You can also add read/write right for specific users in that folder

# Block others and people in the same group to do `r/w/x` on the give folder:    
sudo chmod 700 /path/to/the/directory 

# Give read/write/execute access to USER1 on give folder:
sudo setfacl -R -m user:USER1:rwx  /path/to/the/directory 

# Give read/write/execute access to USER2 on give folder:
sudo setfacl -R -m user:USER2:rwx  /path/to/the/directory

Now, you and your teammate should simultaneously use Conda without any issues.

Migration of conda

Reference:

• https://stackoverflow.com/questions/49127834/removing-conda-environment
• https://stackoverflow.com/questions/66839948/whats-the-point-of-the-prefix-line-in-conda-environment-file-when-creating-a-ne
• https://stackoverflow.com/questions/48016351/how-to-make-new-anaconda-env-from-yml-file
• https://stackoverflow.com/questions/49127834/removing-conda-environment
• https://stackoverflow.com/questions/57527131/conda-environment-has-no-name-visible-in-conda-env-list-how-do-i-activate-it-a
• https://stackoverflow.com/questions/41274007/anaconda-export-environment-file

1, Export as yml

conda env export > environment.yml

2, Create an environment with a prefix  and add your customized env into path

conda env create -f environment.yml -p /home/user/anaconda3/envs/env_name
conda config --append envs_dirs /home/user/anaconda3/envs

Now you can use conda activate to use your env_name

3, If you want to rename it, esp. those without name you can use

conda rename -p /home/user/anaconda3/envs/env_name <target name>

Take care <target name> will be located at the default folder of conda. If you still stick to a customized location, please use what I mentioned in the second step. Enjoy it.

Then you may need to set your timezone, refer to https://askubuntu.com/questions/3375/how-to-change-time-zone-settings-from-the-command-line

timedatectl list-timezones # check available timezone
sudo timedatectl set-timezone America/Los_Angeles

Then check if it succeeds, refer to https://askubuntu.com/questions/767045/how-to-check-computers-timezone-through-terminal

timedatectl status | grep "Time zone"