23

I am trying to install Gitlab Development Kit on Windows Ubuntu Bash.

$python3 output

Python 3.5.2 (default, Nov 17 2016, 17:05:23)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

$python output

The program 'python' can be found in the following packages:
 * python-minimal
 * python3
Try: sudo apt install <selected package>

When I try to do this:

sudo apt-get install build-essential 
./configure 
make -j4 # adjust according to your available CPU capacity 
sudo make install

This is the output after ./configure

$ ./configure
/usr/bin/env: ‘python’: No such file or directory

$ python --version 

The program 'python' can be found in the following packages:
 * python-minimal
 * python3
Try: sudo apt install <selected package>

$which -a python

no output

How can I solve this? I am new to Ubuntu.

  • 2
    Please edit your question and show us the output of these commands: i) python --version; ii) which -a python. – terdon Aug 4 '17 at 8:39
  • 1
    That doesn't make sense. You said " it starts python as it should", but your output shows you don't have python installed. Did you actually run python2 or something? – terdon Aug 4 '17 at 9:03
  • My bad i used $ alias python=python3 before writing python that time after reopening its gone altought it didn't solved the problem – mertselimb Aug 4 '17 at 9:07
  • Please edit your question and clarify. Do you or do you not have python installed? What happens if you run python from the command line? Do you mean you only have python3 installed? – terdon Aug 4 '17 at 9:10
  • I edited the question – mertselimb Aug 4 '17 at 9:20
6

You do seem to have python3 installed, but it isn't called python and anyway the script you want to run (configure) requires python 2. So:

  1. Install python2

    sudo apt-get install python2.7-minimal
    
  2. Run it again

    ./configure
    

If that fails again, call it with python2 explicitly:

/usr/bin/python2.7 configure
| improve this answer | |
25

For ubuntu 20.04 you can use following package to python command. And it is python 3.

sudo apt-get install python-is-python3

| improve this answer | |
17

I had the same problem after installing Ubuntu 18.04 and trying to run some python scripts.

I tried:

sudo apt-get install python2.7-minimal

but I still got the same error. I solved it by:

sudo apt install python-minimal
| improve this answer | |
  • This is really correct: after which python --version gives python 2.7.14 – Mohammad Kanan Sep 4 '18 at 7:25
  • 1
    This one solved my problem but accepted answer didn't..curious.. – Diego Apr 2 '19 at 23:02
  • Same for me this one sudo apt install python-minimal resolved the problem. – user12345 Jun 22 '19 at 7:47
6

Problem scenario:

/usr/bin/env: ‘python’: No such file or directory

Possible Solution #1

If Python 3 is not installed, install it: apt-get install python3

Possible Solution #2

If Python 3 has been installed, run these commands: whereis python3

Then we create a symlink to it: sudo ln -s /usr/bin/python3 /usr/bin/python

| improve this answer | |
  • Worked for me in Lubuntu 20.04, and solved my problem. Thanks! – Munsko Jun 10 at 1:46
5

I had the same problem, It got solved by linking python to python2.7 with the following commands

cd /usr/bin
sudo mv python python.bak
sudo ln -s /usr/bin/python2.7 /usr/bin/python
| improve this answer | |
  • 1
    Worked for python3 as well, while trying to install youtube-dl. I did not want to install another version ... Simple way to just link instead – Amit Feb 9 '19 at 2:56
1

Just for reference... I had a similar issue - running a python script from the docker container failed with "No such file or directory", my solution was to force Unix style line endings on the checkout of the code and in the IDE (as it was bind-mounted from the Windows host to the container).

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1

Yet Another Solution:

$ sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10
update-alternatives: using /usr/bin/python3 to provide /usr/bin/python (python) in auto mode

Tested & verified on my 20.04LTS system. See man update-alternatives for details. And, "No - it's not necessary to have Python2 installed for this to work."

| improve this answer | |
New contributor
deWalker is a new contributor to this site. Take care in asking for clarification, commenting, and answering. Check out our Code of Conduct.
0

Check the spelling in the first line. Trailing spaces have been known to prevent the shell from locating the shell...

"#!/usr/bin/env tclsh "

The training space confused bash.

| improve this answer | |

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