Comment 9 for bug 93546

> It would be nice that if one ran 'mozilla', or 'mozilla-mail', that mozilla
> would look to see if a browser instance was running

Very true, but a separate issue (XPApps) If what you're talking about was done,
there would be less need for mozilla to be able to share a profile amongst
multiple instances. This bug is not about the behavior of mozilla, but being
able to share profiles for applications which really need to do this (not
nescesarily mozilla).