chanwcom's questions

I have been using conda for a few months. The following is the version that I'm using:

conda -V
conda 4.5.4

Previously, to activate or to deactivate the conda environment, I think I have used the following command:

source activate [env_name]
source deactivate

However, recently, the above commands don't work on my machine for unknown reason. The following is the result:

bash: activate: No such file or directory

More strangely, the following commands work:

conda activate [env_name]
conda deactivate

Could you suggest what might have happened and how to fix this problem?

I have been using "Dia" to draw UML class diagrams in Linux environments. However, it seems that Dia is not under active development, and its UI is not as good as LibreOffice Draw.

Could I also use Libre Office Draw to draw UML diagrams efficiently?

I could find some custom shapes from the following page. http://www.lautman.net/mark/coo/index.html

However, I think these are just figures so they are not as useful as Dia UML class diagrams. So, I wonder what would be the best way to draw UML class diagrams using LibreOffice.