I have just migrated from Windows environment. I have installed Python 3.2 in a separate directory. How can I get the python installation path in Ubuntu shell?
Is there any way I can let the shell know/choose at runtime which python version is to be used for further code execution?
Are there any environment variables and search path kind of things in Ubuntu Linux as well?
4 Answers
First question:
which python though its usually /usr/bin/python for the 2.7
Second question:
From a terminal & python2.7: python2.7 yourfile.py.
Simailarly for 3.2: python3.2 yourfile.py though 3.2 isn't installed by default. (You can apt-get install python3.2.)
What python yourfile.py will do depends on which alternative is used for your python interpreter. You can change that by issuing update-alternatives python as root (or by using su).
Third question:
Environment variables are shell dependent, though you can write them out with echo $variable and set them with variable=value (from bash). The search path is simply called PATH and you can get yours by typing echo $PATH.
I hope this was helpful.
3If you want to find the location of a program you can just use whereis <program>.
In your case run:
whereis python2.7
whereis python3.2For finding every file that apt-get has copied for installation use:
dpkg -S python2.7
dpkg -S python3.2But maby it is recommend to save it in a textfile, because the output is to large.
dpkg -S python2.7 >log.txt
gedit log.txtfor running .py file with python 3.2
python3.2 <file.py>Here is a simple way, run in terminal:
type -a pythonor
type -a python3For Python2.7
whereis python2.7 For Python3.2
whereis python3.2For Python 3.8
which python3or
whereis python3
