How are programs executed in Ubuntu?

[Oliver Grawert]

hi,
Am Mittwoch, den 03.02.2016, 13:45 +0000 schrieb Colin Law:
> On 3 February 2016 at 12:28, Oliver Grawert <ogra at ubuntu.com> wrote:
> > hi,
> > Am Mittwoch, den 03.02.2016, 11:56 +1100 schrieb blind Pete:
> >> C
> >> I am very surprised.  The FHS (filesystem hierarchy standard) indicates
> >> that /usr/local/ is the place to store host specific stuff.  It has
> >> always been in my PATH.  Type "echo $PATH" without the quotes in a
> >> terminal.  And /usr/local/share exists on my machine, although
> >> /usr/local/share/applications/ does not.
> >
> > that sounds like a bug ... checking XDG_DATA_DIRS on my trusty system i
> > see:
> > ogra at anubis:~/datengrab/snappy$ env|grep XDG_DATA_DIRS
> > XDG_DATA_DIRS=/usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/
> >
> > so /usr/local/share is definitely in the searchpaths and apps using the
> > xdg standard should actually respect /usr/local/share/applications/ if
> > you created it and added a .desktop file ...
> >
> > see http://standards.freedesktop.org/menu-spec/menu-spec-latest.html
> 
> Hi Oliver, I am not sure what it is that are saying is a bug.  Do you
> mean that if I place a .desktop file in /usr/local/share/applications
> then it should automatically be seen by the Dash?
> 
correct ... the linked spec says $XDG_DATA_DIRS/applications is
valid ... given that /usr/local/share is in XDG_DATA_DIRS by
default /usr/local/share/applications should be valid too ... 
if you create that dir and drop a .desktop file into it ... and unity
(or any other desktop that claims being freedesktop spec compatible)
doesn't pick it up, thats a bug ...

ciao
	oli