How to get the current count of file descriptors in the system?
I know how to get the maximum.
% sysctl kern.maxfiles
kern.maxfiles: 8232
Ref:
Are you looking for kern.openfiles?
[ghoti@pc ~]$ sysctl -ad | grep 'kern.*files:'
kern.maxfiles: Maximum number of files
kern.openfiles: System-wide number of open files
[ghoti@pc ~]$