05-31-2016
Your requirements are not at all clear.
- What constitutes a file?
- How are instances of a file determined?
- How are the latest instances of a file determined? (By name? By timestamp? Something else?)
- Are you trying to keep 10 monthly instances and 10 daily instances of a file? Or 10 instances of daily and monthly files? Or, maybe, 9 daily instances and 1 monthly instance???
This User Gave Thanks to Don Cragun For This Post:
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LEARN ABOUT OSX
ioclasscount
IOCLASSCOUNT(8) BSD System Manager's Manual IOCLASSCOUNT(8)
NAME
ioclasscount
SYNOPSIS
ioclasscount [classname] [...]
DESCRIPTION
ioclasscount displays the instance counts of OSObject-based C++ classes in the kernel, incremented by the number of direct subclasses that
have an instance count of at least 1. For example, if IONetworkController is not directly instantiated, but its direct subclass IOEthernet-
Controller has any instances, then IONetworkController's instance count will be at least 1; if another direct subclass such as IOFWController
has any instances, then IONetworkController's instance count will be at least 2; and so on. (This modification of instance counts prevents
unloading of kexts defining superclasses that have no instances, but whose subclasses in other kexts have instances.)
If classes are specified, instance counts are printed as a comma-separated list in the order specified. If no classes are specified,
instance counts for all classes are printed, one per line of output and sorted by name.
This information is useful for tracking leaks. Instance counts can also found in the root of the IORegistry in the ``IOKitDiagnostics''
property.
EXAMPLES
Display instance counts for IOPCIDevice and AppleTestPCI:
/usr/sbin/ioclasscount IOPCIDevice AppleTestPCI
IOPCIDevice = 2, AppleTestPCI = 1
SEE ALSO
ioalloccount(8), ioreg(8)
Darwin November 06, 2008 Darwin