I am using ubuntu 18 and have multiple versions of java and python installed, How do I change my default version.
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Use the following command to list the available options
sudo update-alternatives --config java
it will ask to choose from the available versions
just enter the selection number and bingo your default java version is changed.
but the same might not work for python
sudo update-alternatives --config python
might give an error no alternatives for python
To change default python to python3
update-alternatives --install /usr/bin/python python /usr/bin/python3.6 10
10 here represents the weight, you can give any number of your choice
Prasun Chakraborty
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