Your shell has not been properly configured to use 'conda activate'.

 # ./conda activate py38

CommandNotFoundError: Your shell has not been properly configured to use 'conda activate'.
To initialize your shell, run

    $ conda init <SHELL_NAME>

Currently supported shells are:
  - bash
  - fish
  - tcsh
  - xonsh
  - zsh
  - powershell

See 'conda init --help' for more information and options.

IMPORTANT: You may need to close and restart your shell after running 'conda init'.

# conda init
no change     /home/software/anaconda3/condabin/conda
no change     /home/software/anaconda3/bin/conda
no change     /home/software/anaconda3/bin/conda-env
no change     /home/software/anaconda3/bin/activate
no change     /home/software/anaconda3/bin/deactivate
no change     /home/software/anaconda3/etc/profile.d/conda.sh
no change     /home/software/anaconda3/etc/fish/conf.d/conda.fish
no change     /home/software/anaconda3/shell/condabin/Conda.psm1
no change     /home/software/anaconda3/shell/condabin/conda-hook.ps1
no change     /home/software/anaconda3/lib/python3.8/site-packages/xontrib/conda.xsh
no change     /home/software/anaconda3/etc/profile.d/conda.csh
no change     /root/.bashrc
No action taken.

解决办法

# 激活环境
source activate
# 退出环境
source deactivate

conda activate py38