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I have previous had no problem building a mirror server with Oracle Linux 7. I have followed the same steps registering the server, adding subscriptions. When I later run ./uln-yum-mirror script I immediately get an output saying python: command not found.

I realized I hadn't installed python, so I did, installing python38.

However again after running uln-yum-mirror I get same python: command not found message.

Scratching my head as I am bit out of ideas.

I have attempted adding alias python='python38' to ~/.bashrc but that has made no difference.

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2 Answers 2

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Aliases that you set in your interactive shell never carry over into scripts that you execute.

On Oracle Linux 8, to make python38 the default Python interpreter, you would first install Python 3.8 using

sudo dnf module install python38

and then make python38 the system's default Python interpreter using

sudo alternatives --set python /usr/bin/python38

See also the official Oracle Linux 8 documentation about Installing Python.

See also the About Python section in the same document. It mentions the fact that python no longer is aliased by default and that Python 2 is unmaintained.

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The uln-yum-mirror script in /usr/bin has a line:

python  -c

This needs to be changed to:

python3 -c
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