/usr/bin/env python, force a version
mekstran at scl.ameslab.gov
Thu Oct 6 16:09:58 CEST 2005
On Thursday 06 October 2005 06:25, manatlan at gmail.com wrote:
> I hope you understand my needs. Is there a python/bash mechanism to
> override the default python version of the system ... and run the
> script with any version of python (but the most recent) ?
> or can you explain me how to do that ? the simplest way ?
This solution makes a few assumptions... but it should work in the
majority of cases.
The principle is that Python is, in my experience, *usually* installed
as python2.4 or whatever - even ./configure && make && make install in
the tarball makes python a symbolic link to a python2.4 executable.
Assuming that this is the case, and that python2.4 will never be any
other version of Python:
if [ $? != 0 ]; then
echo "This program requires Python 2.4 to be installed." >/dev/stderr
"$PYTHON" "$APPATH" "$@"
Problems: Requires Python 2.4 to be installed as python2.4, and doesn't
have upward compatibility (i.e. 2.5). But it's at least as good as
#!/usr/bin/env python2.4, and it gives a clean error message.
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