hw.activecpu | int | no | The number of CPUs currently active and available (may be affected by power management settings). |
hw.busfrequency | int | no | Bus frequency in hertz. Divide by one million for a megahertz figure. |
hw.busfrequency_max | int | no | Maximum bus frequency in hertz. |
hw.busfrequency_min | int | no | Minimum bus frequency in hertz. |
hw.byteorder | int | no | Variable that returns 4321, showing the ordering of four bytes on the PowerPC platform. |
hw.cachelinesize | int | no | The cache line size in bytes. |
hw.cpufrequency | int | no | CPU frequency in hertz. Divide by one million for a megahertz figure. |
hw.cpufrequency_max | int | no | Maximum CPU frequency in hertz. |
hw.cpufrequency_min | int | no | Minimum CPU frequency in hertz. |
hw.cpusubtype | int | no | The mach-o subtype of the CPU (see /System/Library/Frameworks/Kernel.framework/Versions/ A/Headers/mach/machine.h ). |
hw.cputype | int | no | The mach-o type of the CPU. |
hw. epoch | int | no | Variable that indicates whether your hardware is "New World" or "Old World." Old World Macintoshes (pre-G3) have a value of . |
hw.l1dcachesize | int | no | Level 1 data cache size in bytes. |
hw.l1icachesize | int | no | Level 1 instruction cache size in bytes. |
hw.l2cachesize | int | no | Level 2 cache size in bytes. |
hw.l2settings | int | no | Level 2 cache settings. |
hw.l3cachesize | int | no | Level 3 cache size in bytes. |
hw.l3settings | int | no | Level 3 cache settings. |
hw.machine | string | no | Machine class ( Power Macintosh on most systems). |
hw.model | string | no | Machine model. |
hw.ncpu | int | no | Number of CPUs. |
hw.optional. altivec | int | no | Indicates whether AltiVec is enabled. |
hw.optional.datastreams | int | no | Indicates whether PowerPC data stream instructions are supported by the CPU. |
hw.optional.dcba | int | no | Indicates whether the PowerPC DCBA instruction is supported by the CPU. |
hw.optional.floatingpoint | int | no | Indicates whether floating point operations are supported by the CPU. |
hw.optional.graphicsops | int | no | Indicates whether graphics operations are supported by the CPU. |
hw.optional.stfiwx | int | no | Indicates whether the PowerPC STFIWX instruction is supported by the CPU. |
hw.pagesize | int | no | Software page size in bytes. |
hw.physmem | int | no | Physical memory in bytes. |
hw.tbfrequency | int | no | The base frequency used by Mac OS X for its timing services. |
hw.usermem | int | no | Non-kernel memory. |
hw.vectorunit | int | no | Variable that indicates whether you are running on an AltiVec-enabled CPU. |
kern.aiomax | int | no | Maximum AIO requests . |
kern.aioprocmax | int | no | Maximum AIO requests per process. |
kern.aiothreads | int | no | Maximum number of AIO worker threads. |
kern.argmax | int | no | Maximum number of arguments supported by exec ( ) . |
kern.boottime | struct timeval | no | The time when the system was booted . |
kern.clockrate | struct clockinfo | no | System clock timings. |
kern. dummy | n/a | n/a | Unused. |
kern.hostid | int | yes | Host identifier. |
kern.hostname | string | yes | Hostname. |
kern.ipc.* | various | n/a | Various IPC settings. |
kern.job_control | int | no | Variable that indicates whether job control is available. |
kern.maxfiles | int | yes | Maximum number of open files. |
kern.maxfilesperproc | int | yes | Maximum number of open files per process . |
kern.maxproc | int | yes | Maximum number of simultaneous processes. |
kern.maxprocperuid | int | yes | Maximum number of simultaneous processes per user . |
kern.maxvnodes | int | yes | Maximum number of vnodes. |
kern.netboot | int | no | Variable that indicates whether the system booted via NetBoot. |
kern.ngroups | int | no | Maximum number of supplemental groups. |
kern.nisdomainname | string | yes | NIS domain name. |
kern.osrelease | string | no | Operating system release version. |
kern.osrevision | int | no | Operating system revision. |
kern.ostype | string | no | Operating system name. |
kern.posix1version | int | no | The version of POSIX 1003.1 with which the system attempts to comply . |
kern.saved_ids | int | no | This is set to 1 if saved set- group and set-user IDs are available. |
kern. securelevel | int | increment only | The system security level. |
kern.symfile | string | no | The kernel symbol file. |
kern.sysv.* | various | n/a | System V semaphore settings. See /System/Library/Frameworks/Kernel.framework/Versions/A/Headers/sys/sysctl.h . |
kern.sysv.shmall | int | yes | The maximum size of a shared memory segment. |
kern.sysv.shmmax | int | yes | The maximum number of shared memory pages. |
kern.sysv.shmmin | int | yes | The maximum number of shared memory segments per process. |
kern.sysv.shmmni | int | yes | The maximum number of shared memory segments. |
kern.sysv.shmseg | int | yes | The minimum size of a shared memory segment. |
kern.version | string | no | The kernel version string. |
net.appletalk.routermix | | | Description unavailable at time of printing. Please see the errata at http://www.oreilly.com/catalog/mpantherunix/. |
net.inet.* | various | n/a | IPv4 settings. |
net.inet6.* | various | n/a | IPv6 settings. |
net.key.* | various | n/a | IPSec key management settings. |
net.link. ether .inet.* | various | n/a | Ethernet settings. |
net.local.* | various | n/a | Description unavailable at time of printing. Please see the errata at http://www.oreilly.com/catalog/mpantherunix/. |
user.bc_base_max | int | no | Maximum ibase/obase available in the bc calculator. |
user.bc_dim_max | int | no | Maximum array size available in the bc calculator. |
user.bc_scale_max | int | no | Maximum scale value available in the bc calculator. |
user.bc_string_max | int | no | Maximum string length available in the bc calculator. |
user.coll_weights_max | int | no | Maximum number of weights that can be used with LC_COLLATE in the locale definition file. |
user.cs_path | string | no | Value for PATH that can find all the standard utilities. |
user.expr_nest_max | int | no | Maximum number of expressions you can nest within parentheses using expr . |
user.line_max | int | no | Maximum length in bytes of an input line used with a text-processing utility. |
user.posix2_c_bind | int | no | Variable that returns 1 if the C development environment supports the POSIX C Language Bindings Option; otherwise , the result will be . |
user.posix2_c_dev | int | no | Variable that returns 1 if the C development environment supports the POSIX C Language Development Utilities Option; otherwise, the result will be . |
user.posix2_char_term | int | no | Variable that returns 1 if the systems supports at least one terminal type specified in POSIX 1003.2; otherwise, the result will be . |
user.posix2_fort_dev | int | no | Variable that returns 1 if the system supports the POSIX FORTRAN Development Utilities Option; otherwise, the result will be . |
user.posix2_fort_run | int | no | Variable that returns 1 if the system supports the POSIX FORTRAN Runtime Utilities Option; otherwise, the result will be . |
user.posix2_localedef | int | no | Variable that returns 1 if the system allows you to create locale; otherwise, the result will be . |
user.posix2_sw_dev | int | no | Variable that returns 1 if the system supports the POSIX Software Development Utilities Option; otherwise, the result will be . |
user.posix2_upe | int | no | Variable that returns 1 if the system supports the POSIX User Portable Utilities Option; otherwise, the result will be . |
user.posix2_version | int | no | Variable that returns the POSIX 1003.2 version with which the system attempts to comply. |
user.re_dup_max | int | no | Maximum repeated occurrences of a regular expression when using interval notation. |
user.stream_max | int | no | Maximum number of streams a process may have open. |
user.tzname_max | int | no | Maximum number of types supported for a time zone name. |
vfs.* | various | n/a | Various VFS settings. |
vm.loadavg | string | no | Current load average. |