open3d installation related issues

1.Installation: Anaconda

Reference:
Detailed steps to install Anaconda on Ubuntu (Ubuntu21.10, Anaconda3)
The download link isAnaconda
Follow the following steps to complete the installation:
(1) Run the Anaconda3-2021.11-Linux-x86_64.sh file

bash Anaconda3-2021.11-Linux-x86_64.sh

(2) Enter yes

wwtx@wwtx:~/下载$ bash Anaconda3-2022.05-Linux-x86_64.sh 

Welcome to Anaconda3 2022.05

In order to continue the installation process, please review the license
agreement.
Please, press ENTER to continue
>>> yes

（3）

2.conda: command not found

Reference:conda: command not found

3. Install open3d 0.9.0 on ubuntu20.04

Reference:
ubuntu1604 installs open3d version 0.9.0
ubuntu20.04
Use the new version of open3d< /span> Enter the command to view the available versions Take the python3.8 environment under windows as an example (anaconda default Environment base), before upgrading pip
If you want to use the new version, you can change the system (ubuntu1804 or above or windows). After installing the python environment, upgrade pip

pip install open3d==

turn out

ERROR: Could not find a version that satisfies the requirement open3d==
ERROR: No matching distribution found for open3d==

Upgrade pip

python -m pip install --upgrade pip

Enter the command again

pip install open3d==

You can see that the available versions are 0.10 and later

ERROR: Could not find a version that satisfies the requirement open3d== (from versions: 0.10.0.0, 0.10.0.1, 0.11.0, 0.11.1, 0.11.2, 0.12.0, 0.13.0)
ERROR: No matching distribution found for open3d==

For example, to install the latest 0.13.0, enter

pip install open3d==0.13.0

Install 0.9.0 on ubuntu1604

If you cannot change the system, use the following method to install version 0.9.0 on ubuntu1604
Install anaconda and exit the default conda environment

conda deactivate

Create a new python environment, the python version is 3.7

conda create -n env_open3d_09 python=3.7

Enter the environment

conda activate env_open3d_09

Upgrade pip

python -m pip install --upgrade pip

View available versions

pip install open3d==

result

ERROR: Could not find a version that satisfies the requirement open3d== (from versions: 0.8.0.0, 0.9.0.0, 0.10.0.0, 0.10.0.1, 0.11.0, 0.11.1, 0.11.2, 0.12.0, 0.13.0)
ERROR: No matching distribution found for open3d==

Version 0.9.0 is available
Installation

pip install open3d==0.9.0

ERROR: Exception:
Traceback (most recent call last):
  File "/home/wwtx/anaconda3/envs/env_open3d_09/lib/python3.7/site-packages/pip/_vendor/urllib3/response.py", line 435, in _error_catcher
    yield
  File "/home/wwtx/anaconda3/envs/env_open3d_09/lib/python3.7/site-packages/pip/_vendor/urllib3/response.py", line 516, in read
    data = self._fp.read(amt) if not fp_closed else b""

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