OK inertia overcome…  I tested FSEvents and if I create an event stream for 
/Network and restrict to mount and I unmount flags I can successfully detect 
the mounting and in mounting of these shares.  I appreciate your thoughts!  
Thanks for your help.

Sandor

> On Sep 3, 2018, at 14:51, Sandor Szatmari <admin.szatmari....@gmail.com> 
> wrote:
> 
> Thanks for your thoughts!  
> 
> Below vvv
>> On Sep 3, 2018, at 13:14, Jean-Daniel <mail...@xenonium.com> wrote:
>> 
>> 
>> 
>>> Le 3 sept. 2018 à 19:07, Sandor Szatmari <admin.szatmari....@gmail.com> a 
>>> écrit :
>>> 
>>> I have a problem to solve where it appears I need to detect if 
>>> /Network/Library is available or not.  
>>> 
>>> Basically, I’d like to handle situation where I need to copy items from 
>>> /Network/Library at times when it’s it’s not yet available but may be 
>>> available soon…  i.e. at boot, or after the Network cycles, etc.
>>> 
>>> There’s a couple of strategies I can think of:
>>> 
>>> Keep failing the copy until it works or a default time out expires
>>> Notification of availability (Preferred, but I can’t find a way to do this)
>>> Quit and retry later.
>>> 
>>> Any suggestion/guidance anyone can provide on this?
>> 
>> I’m not familiar with /Network/Library, but if this is a standard directory, 
>> you can wait for it to be created using file system event (I think there is 
>> a node dispatch source for that), and if this is a mount point, you can use 
>> disk arbitration framework to get notification.
> 
> /Network/Library is a special directory published by OSX server that allows 
> you to share a common ‘Library’ folder to the clients on your LAN.  As an 
> example of its special behavior, it appears as a directory even when not 
> available.  (It probably is a directory itself).  It is created once and does 
> not go away, like /Volumes.  I am trying to detect the presence of files 
> within it or whether it’ is ‘mounted’.  When it’s not available ‘ls -al’ 
> responds with ‘ls: Host not available’.  And when it is available ‘ls -al’ 
> responds with directory contents as expected.  I can use this behavior to 
> implement the keep trying while failure and not timed out approach.
> 
> I have looked at FSEvents and Disk arbitration already and I’m not sure I can 
> use these as it does seem to have special treatment. I hope I can use one of 
> them.  I tried NSWorkspace (disk mount/in mount notifications) and these 
> didn’t seem to be triggered.  
> 
> Sandor
> 
>> 
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