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Frequently Asked Questions
==========================
Q
My program never starts and supervisor doesn't indicate any error?
A
Make sure the ``x`` bit is set on the executable file you're using in
the ``command=`` line of your program section.
Q
I am a software author and I want my program to behave differently
when it's running under :program:`supervisord`. How can I tell if
my program is running under :program:`supervisord`?
A
Supervisor and its subprocesses share an environment variable
:envvar:`SUPERVISOR_ENABLED`. When your program is run under
:program:`supervisord`, it can check for the presence of this
environment variable to determine whether it is running as a
:program:`supervisord` subprocess.
Q
My command works fine when I invoke it by hand from a shell prompt,
but when I use the same command line in a supervisor program
``command=`` section, the program fails mysteriously. Why?
A
This may be due to your process' dependence on environment variable
settings. See :ref:`subprocess_environment`.
Q
How can I make Supervisor restart a process that's using "too much"
memory automatically?
A
The :term:`Superlance` package contains a console script that can be
used as a Supervisor event listener named ``memmon`` which helps
with this task. It works on Linux and Mac OS X.
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