anaconda使用activate出现错误怎么办？

Anaconda使用conda activate激活环境出错

错误如下：

CommandNotFoundError: Your shell has not been properly configured to use 'conda activate'.
If your shell is Bash or a Bourne variant, enable conda for the current user with
 
    $ echo ". /home/ubuntu/anaconda3/etc/profile.d/conda.sh" >> ~/.bashrc
 
or, for all users, enable conda with
 
    $ sudo ln -s /home/ubuntu/anaconda3/etc/profile.d/conda.sh /etc/profile.d/conda.sh
 
The options above will permanently enable the 'conda' command, but they do NOT
put conda's base (root) environment on PATH.  To do so, run
 
    $ conda activate
 
in your terminal, or to put the base environment on PATH permanently, run
 
    $ echo "conda activate" >> ~/.bashrc
 
Previous to conda 4.4, the recommended way to activate conda was to modify PATH in
your ~/.bashrc file.  You should manually remove the line that looks like
 
    export PATH="/home/ubuntu/anaconda3/bin:$PATH"
 
^^^ The above line should NO LONGER be in your ~/.bashrc file! ^^^

这是由于conda的激活命令出了问题，解决方法如下：

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

随后解决问题。

可以进行激活环境了：

conda activate your-env-name