> On Tue, 2008-03-11 at 18:20 -0400, Eric B. wrote:
> > In my struggle today to get python2.4 installed on my CentOS4 system, I
> > saw
> > that it installed a packaged called alternatives which is supposed to
> > handle
> > symbolic links to default commands in a nice clean, structured way.
> > However, I am having trouble understanding how this thing works.
> >
> > I have read the man page half a dozen times already, and yet the
> > alternative
> > link for python which was installed doesn't seem to follow what is
> > written
> > in the man page. I am trying to modify the default behaviour for it,
> > but
> > having a lot of difficulty.
>
> As an end-user, the only important commands you need are:
>
> "alternatives --display <name>": Show information about an alternative
> "alternatives --config <name>": Allow selection of an alternative
> "ls /var/lib/alternatives": Show valid alternatives
That's what I thought too, however, if I look in my /usr/bin directory I see
the following:
# ls -l /usr/bin/pyt*
lrwxrwxrwx 1 root root 18 Mar 11 17:43 /usr/bin/python ->
/etc/alternatives/links/|usr|bin|python
lrwxrwxrwx 1 root root 40 Mar 11 17:31 /usr/bin/python2 ->
/etc/alternatives/links/|usr|bin|python2
-rwxr-xr-x 2 root root 5396 Dec 11 05:30 /usr/bin/python2.3
-rwxr-xr-x 1 root root 3268 Sep 28 2005 /usr/bin/python2.4
but
# alternatives --display python
returns nothing. If I look in /var/lib/alternatives, I only find "print",
"mta" and "etags".
So I'm not quite sure how to update / modify the python alternative to point
to another location instead. If I look in /etc/alternatives/links I see the
following:
# ls -l /etc/alternatives/links/
total 12
lrwxrwxrwx 1 root root 18 Mar 11 17:31 |usr|bin|python ->
/usr/bin/python2.4
lrwxrwxrwx 1 root root 15 Mar 11 17:31 |usr|bin|python2 -> /usr/bin/python
lrwxrwxrwx 1 root root 34 Mar 11 17:31 |usr|share|man|man1|python.1.gz ->
/usr/share/man/man1/python2.4.1.gz
The rpm installer automatically created these links when I yum installed
python24 from pyvault. (It automatically installed the alternatives pkg).
Thanks for the help!
Eric
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