> On Sep 10, 2016, at 1:42 PM, David Epstein <david.epst...@warwick.ac.uk>
> wrote:
>
> I gave the command:
>
> ls -l /opt/local/bin/py*
> and the system replied:
>
>> lrwxr-xr-x 1 root wheel 23 9 Jun 19:13 /opt/local/bin/pydoc@ ->
>> /opt/local/bin/pydoc2.7
>> lrwxr-xr-x 1 root wheel 23 9 Jun 17:19 /opt/local/bin/pydoc3@ ->
>> /opt/local/bin/pydoc3.5
>> lrwxr-xr-x 1 root wheel 24 9 Jun 19:13 /opt/local/bin/python@ ->
>> /opt/local/bin/python2.7
>> lrwxr-xr-x 1 root wheel 31 9 Jun 19:13 /opt/local/bin/python-config@ ->
>> /opt/local/bin/python2.7-config
>> lrwxr-xr-x 1 root wheel 24 9 Jun 17:19 /opt/local/bin/python3@ ->
>> /opt/local/bin/python3.5
>> lrwxr-xr-x 1 root wheel 31 9 Jun 17:19 /opt/local/bin/python3-config@ ->
>> /opt/local/bin/python3.5-config
>> lrwxr-xr-x 1 root wheel 25 9 Jun 17:19 /opt/local/bin/python3m@ ->
>> /opt/local/bin/python3.5m
>> lrwxr-xr-x 1 root wheel 32 9 Jun 17:19 /opt/local/bin/python3m-config@
>> -> /opt/local/bin/python3.5m-config
>> lrwxr-xr-x 1 root wheel 25 9 Jun 19:13 /opt/local/bin/pythonw@ ->
>> /opt/local/bin/pythonw2.7
>> lrwxr-xr-x 1 root wheel 25 9 Jun 17:19 /opt/local/bin/pyvenv@ ->
>> /opt/local/bin/pyvenv-3.5
Those are symlinks created by "port select". Presumably you set up the python,
python2, and python3 select groups at some point.
> You will see that none of the files on the righthand side of the arrow ->
> appears on any lefthand side. I tried “port provides” on both lefthand and
> righthand sides and received error messages from port such as
>> /opt/local/bin/pydoc2.7 does not exist.
Did you uninstall python27?
> and
>> /opt/local/bin/pydoc is not provided by a MacPorts port.
Right, because that file was created by "port select" and not a port.
> How do I get rid of the symbolic links, other than using /bin/rm, something I
> have been told never to do?
>
> How can I find all hanging links like this in /opt? Presumably there is a
> clever formula using unix find.
Try running "port select --summary" (although I'm not sure whether this feature
has been released). It will list the select groups on your system and their
current settings. If any of those settings corresponds to a port you have
uninstalled, you should be able to remove the symlinks with
sudo port select --set python none
sudo port select --set python2 none
sudo port select --set python3 none
etc etc etc
> I wonder what causes this kind of problem? I cannot remember any of my port
> processes terminating incorrectly. I have lately been uninstalling
> python-related ports, because I had too many different versions of python on
> my machine, and I was getting confused.
The symlinks created by "port select" are not modified if the selected port is
subsequently deactivated or uninstalled. I think there is an open ticket about
this, but I can't find it at the moment.
vq
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