/etc/profile - futile try to predict order of execution

Igor Pechtchanski pechtcha@cs.nyu.edu
Fri Sep 19 21:32:00 GMT 2003


On Fri, 19 Sep 2003, Hannu E K Nevalainen (garbage mail) wrote:

> While looking for the reason why "less" has stopped understanding the
> BACKSPACE key (and a bunch of others) I stumbled over the following.
>
> I'm sending this just to INFORM about it.
> I'm NOT on the xfree list.
> I'm NOT interested of participating in more discussions on this subject.
>
> > $ head -63 /etc/profile | tail -1
> >         `/bin/find /etc/profile.d -iname '*.sh' -type f`
> >
> > $ /bin/find /etc/profile.d -iname '*.sh' -type f
> > /etc/profile.d/lilypond-profile.sh
> > /etc/profile.d/mc.sh
> > /etc/profile.d/openssl.sh
> > /etc/profile.d/00xfree.sh
>
>  NOTE that 00xfree is listed last...
>  THEN read what the comment in the first lines of the script says.
>
> > $ cat /etc/profile.d/00xfree.sh
> > # the script name starts with 00 to ensure that it is executed before any
> > # other scripts because one of them may need to know where X is to run
> > # properly.
> >
> > X11PATH="/usr/X11R6/bin"
> >
> > if ! /bin/echo ${PATH} | /bin/grep -q ${X11PATH} ; then
> >     export PATH="${PATH}:${X11PATH}"
> > fi
> >
> > $

IMO, this belongs on the cygwin list, as this concerns the predictability
of the script execution order from /etc/profile.

Hannu, this is really weird.  I'm getting 00xfree.sh as the *first* file
match:

$ /bin/find /etc/profile.d/ -iname '*.sh' -type f
/etc/profile.d/00xfree.sh
/etc/profile.d/mc.sh
/etc/profile.d/openssl.sh
$

WAGs:

Could this be the result of a different collation sequence in your
language?  Can you try running "LC_ALL=C /bin/find /etc/profile.d -iname
'*.sh' -type f" on your machine?

Speaking of your machine, could this be because you're using Win98?
(Checking) Bingo!  Somehow, on Win98 find traverses files in unsorted
order, i.e., the order they were created.  I guess either /etc/profile
should guarantee alphanumeric order, or maintainers need to reassess their
assumptions.
        Igor
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