背景
我正在使用全新安装的 Kali Linux 2023.1，它附带了 Python3.11.1。我需要安装MobSF，它需要python3对应python3.8和python3.10之间的版本。
所以我决定安装 pyenv 然后3.9.5通过pyenv install -v 3.9.5.然后我执行了pyenv global 3.9.5。然后我执行了python3 --version，我得到了permission denied。
所以我决定使用update-alternatives这个新安装的python3.9.5默认值。我执行了以下命令。
sudo update-alternatives --install /usr/bin/python3 python3 /home/user/.pyenv/versions/3.9.5/bin 1
然后我执行了sudo update-alternatives --config python3它给了我
└─$ sudo update-alternatives --config python3
[sudo] password for user:
There are 2 choices for the alternative python3 (providing /usr/bin/python3).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/python3.11 1 auto mode
1 /home/user/.pyenv/versions/3.9.5/bin 1 manual mode
2 /usr/bin/python3.11 1 manual mode
Press <enter> to keep the current choice[*], or type selection number:
我进入了1。
现在当我执行时sudo update-alternatives --config python3，我得到
└─$ sudo update-alternatives --config python3
[sudo] password for user:
There are 2 choices for the alternative python3 (providing /usr/bin/python3).
Selection Path Priority Status
------------------------------------------------------------
0 /home/user/.pyenv/versions/3.9.5/bin 1 auto mode
* 1 /home/user/.pyenv/versions/3.9.5/bin 1 manual mode
2 /usr/bin/python3.11 1 manual mode
Press <enter> to keep the current choice[*], or type selection number:
问题
现在当我跑步时python3 -V，我得到
┌──(user㉿kali)-[~]
└─$ python3 -V
zsh: permission denied: python3
┌──(user㉿kali)-[~]
└─$ sudo python3 -V
[sudo] password for user:
sudo: python3: command not found
现在我不知道该怎么办。请问有人可以指导吗？
评论中的详细信息
评论： 那么，那里有文件吗？您告诉系统使用 /home/user/.pyenv/versions/3.9.5/bin/python3，这个存在吗？它可以执行吗？
以下是/home/user/.pyenv/versions/3.9.5/bin/的情况：
┌──(user㉿kali)-[~/.pyenv/versions/3.9.5/bin]
└─$ ls -al
total 116
drwxrwxrwx 2 user user 4096 Apr 28 07:10 .
drwxrwxrwx 6 user user 4096 Apr 28 03:24 ..
lrwxrwxrwx 1 user user 8 Apr 28 03:24 2to3 -> 2to3-3.9
-rwxrwxrwx 1 user user 127 Apr 28 03:24 2to3-3.9
lrwxrwxrwx 1 user user 7 Apr 28 03:24 idle -> idle3.9
lrwxrwxrwx 1 user user 7 Apr 28 03:24 idle3 -> idle3.9
-rwxrwxrwx 1 user user 125 Apr 28 03:24 idle3.9
lrwxrwxrwx 1 user user 6 Apr 28 03:24 pip -> pip3.9
-rwxrwxrwx 1 user user 255 Apr 28 03:24 pip3
-rwxrwxrwx 1 user user 255 Apr 28 03:24 pip3.9
lrwxrwxrwx 1 user user 8 Apr 28 03:24 pydoc -> pydoc3.9
lrwxrwxrwx 1 user user 8 Apr 28 03:24 pydoc3 -> pydoc3.9
-rwxrwxrwx 1 user user 110 Apr 28 03:24 pydoc3.9
lrwxrwxrwx 1 user user 9 Apr 28 03:24 python -> python3.9
lrwxrwxrwx 1 root root 25 Mar 13 08:18 python3 -> /etc/alternatives/python3
-rwxrwxrwx 1 user user 17576 Apr 28 03:23 python3.9
-rwxrwxrwx 1 user user 3111 Apr 28 03:24 python3.9-config
-rwxrwxrwx 1 user user 65392 Apr 28 03:24 python3.9-gdb.py
lrwxrwxrwx 1 user user 16 Apr 28 03:24 python3-config -> python3.9-config
lrwxrwxrwx 1 user user 16 Apr 28 03:24 python-config -> python3.9-config
正如我们所看到的，这python3是一个指向 的符号链接/etc/alternatives/python3。所以下面的截图显示了情况/etc/alternatives/python3
┌──(user㉿kali)-[/etc/alternatives/python3]
└─$ ls -al
total 116
drwxrwxrwx 2 user user 4096 Apr 28 07:10 .
drwxrwxrwx 6 user user 4096 Apr 28 03:24 ..
lrwxrwxrwx 1 user user 8 Apr 28 03:24 2to3 -> 2to3-3.9
-rwxrwxrwx 1 user user 127 Apr 28 03:24 2to3-3.9
lrwxrwxrwx 1 user user 7 Apr 28 03:24 idle -> idle3.9
lrwxrwxrwx 1 user user 7 Apr 28 03:24 idle3 -> idle3.9
-rwxrwxrwx 1 user user 125 Apr 28 03:24 idle3.9
lrwxrwxrwx 1 user user 6 Apr 28 03:24 pip -> pip3.9
-rwxrwxrwx 1 user user 255 Apr 28 03:24 pip3
-rwxrwxrwx 1 user user 255 Apr 28 03:24 pip3.9
lrwxrwxrwx 1 user user 8 Apr 28 03:24 pydoc -> pydoc3.9
lrwxrwxrwx 1 user user 8 Apr 28 03:24 pydoc3 -> pydoc3.9
-rwxrwxrwx 1 user user 110 Apr 28 03:24 pydoc3.9
lrwxrwxrwx 1 user user 9 Apr 28 03:24 python -> python3.9
lrwxrwxrwx 1 root root 25 Mar 13 08:18 python3 -> /etc/alternatives/python3
-rwxrwxrwx 1 user user 17576 Apr 28 03:23 python3.9
-rwxrwxrwx 1 user user 3111 Apr 28 03:24 python3.9-config
-rwxrwxrwx 1 user user 65392 Apr 28 03:24 python3.9-gdb.py
lrwxrwxrwx 1 user user 16 Apr 28 03:24 python3-config -> python3.9-config
lrwxrwxrwx 1 user user 16 Apr 28 03:24 python-config -> python3.9-config