root@multi-v7-ml:/tmp# pip install pyinstaller
-sh: pip: command not found
root@multi-v7-ml:/tmp# pip
pip3        pip3.9      pip_stress  
root@multi-v7-ml:/tmp# pip
pip3        pip3.9      pip_stress  
root@multi-v7-ml:/tmp# pip3 install pyinstaller
Collecting pyinstaller
  Downloading pyinstaller-4.5.1.tar.gz (2.7 MB)
     |████████████████████████████████| 2.7 MB 1.0 MB/s 
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Collecting pyinstaller-hooks-contrib>=2020.6
  Downloading pyinstaller_hooks_contrib-2021.3-py2.py3-none-any.whl (200 kB)
     |████████████████████████████████| 200 kB 5.5 MB/s 
Requirement already satisfied: setuptools in /usr/lib/python3.9/site-packages (from pyinstaller) (56.0.0)
Collecting altgraph
  Downloading altgraph-0.17-py2.py3-none-any.whl (21 kB)
Building wheels for collected packages: pyinstaller
  Building wheel for pyinstaller (PEP 517) ... done
  Created wheel for pyinstaller: filename=pyinstaller-4.5.1-py3-none-any.whl size=2618934 sha256=f6d4a0e66e622cb48d478bd828341235cc18f61c4e1dc6fc482f2d9d9448d07c
  Stored in directory: /home/root/.cache/pip/wheels/28/23/6a/19f72e20f5af1e637ef7e34185e2ee64469826c8543f7e90f6
Successfully built pyinstaller
Installing collected packages: pyinstaller-hooks-contrib, altgraph, pyinstaller
Successfully installed altgraph-0.17 pyinstaller-4.5.1 pyinstaller-hooks-contrib-2021.3
root@multi-v7-ml:/tmp#