一些系统命令

1 获得系统的基本硬件信息

system_profiler SPHardwareDataType

Hardware:

    Hardware Overview:

      Model Name: MacBook Pro
      Model Identifier: MacBookPro16,1
      Processor Name: 6-Core Intel Core i7
      Processor Speed: 2.6 GHz
      Number of Processors: 1
      Total Number of Cores: 6
      L2 Cache (per Core): 256 KB
      L3 Cache: 12 MB
      Hyper-Threading Technology: Enabled
      Memory: 16 GB
      Boot ROM Version: 1037.120.87.0.0 (iBridge: 17.16.15300.0.0,0)
      Serial Number (system): C02CWC0VMD6M
      Hardware UUID: 93A54D4D-7131-5771-A175-1DA03BCE5819
      Activation Lock Status: Disabled

2.sysctl

hw.activecpu: 12
hw.busfrequency: 400000000
hw.busfrequency_max: 400000000
hw.busfrequency_min: 400000000
hw.byteorder: 1234
hw.cacheconfig: 12 2 2 12 0 0 0 0 0 0
hw.cachelinesize: 64
hw.cachesize: 34359738368 32768 262144 9437184 0 0 0 0 0 0
hw.cpu64bit_capable: 1
hw.cpufamily: 260141638
hw.cpufrequency: 2200000000
hw.cpufrequency_max: 2200000000
hw.cpufrequency_min: 2200000000
hw.cpusubtype: 8
hw.cputhreadtype: 1
hw.cputype: 7
hw.l1dcachesize: 32768
hw.l1icachesize: 32768
hw.l2cachesize: 262144
hw.l3cachesize: 9437184
hw.logicalcpu: 12
hw.logicalcpu_max: 12
hw.memsize: 34359738368
hw.ncpu: 12
hw.packages: 1
hw.pagesize: 4096
hw.physicalcpu: 6
hw.physicalcpu_max: 6
hw.tbfrequency: 1000000000
kern.argmax: 262144
kern.bootargs: 
kern.boottime: { sec = 1555831007, usec = 348628 } Sun Apr 21 15:16:47 2019
kern.clockrate: { hz = 100, tick = 10000, tickadj = 0, profhz = 100, stathz = 100 }
kern.coredump: 1
kern.corefile: /cores/core.%P
kern.flush_cache_on_write: 0
kern.hostid: 0
kern.hostname: haodeMacBook-Pro.local
kern.job_control: 1
kern.maxfiles: 98304
kern.maxfilesperproc: 49152
kern.maxnbuf: 16384
kern.maxproc: 4256
kern.maxprocperuid: 2837
kern.maxvnodes: 263168
kern.msgbuf: 16384
kern.nbuf: 16384
kern.netboot: 0
kern.ngroups: 16
kern.nisdomainname: 
kern.num_files: 5645
kern.num_tasks: 8192
kern.num_taskthreads: 8192
kern.num_threads: 40960
kern.num_vnodes: 263168
kern.nx: 1
kern.osrelease: 18.2.0
kern.osrevision: 199506
kern.ostype: Darwin
kern.osversion: 18D109
kern.posix1version: 200112
kern.procname: sysctl
kern.safeboot: 0
kern.saved_ids: 1
kern.secure_kernel: 0
kern.securelevel: 0
kern.singleuser: 0
kern.sleeptime: { sec = 1558779450, usec = 38866 } Sat May 25 18:17:30 2019
kern.slide: 1
kern.stack_depth_max: 10704
kern.stack_size: 16384
kern.sugid_coredump: 0
kern.sugid_scripts: 0
kern.usrstack: -433528832
kern.usrstack64: 140732759859200
kern.uuid: 1970B070-E53F-3178-83F3-1B95FA340695
kern.version: Darwin Kernel Version 18.2.0: Thu Dec 20 20:46:53 PST 2018; root:xnu-4903.241.1~1/RELEASE_X86_64
kern.waketime: { sec = 1558779640, usec = 668566 } Sat May 25 18:20:40 2019
machdep.cpu.address_bits.physical: 39
machdep.cpu.address_bits.virtual: 48
machdep.cpu.brand: 0
machdep.cpu.brand_string: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
machdep.cpu.cache.L2_associativity: 4
machdep.cpu.cache.linesize: 64
machdep.cpu.cache.size: 256
machdep.cpu.core_count: 6
machdep.cpu.cores_per_package: 8
machdep.cpu.extfamily: 0
machdep.cpu.extfeature_bits: 1241984796928
machdep.cpu.extfeatures: SYSCALL XD 1GBPAGE EM64T LAHF LZCNT PREFETCHW RDTSCP TSCI
machdep.cpu.extmodel: 9
machdep.cpu.family: 6
machdep.cpu.feature_bits: 9221959987971750911
machdep.cpu.features: FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE MCA CMOV PAT PSE36 CLFSH DS ACPI MMX FXSR SSE SSE2 SS HTT TM PBE SSE3 PCLMULQDQ DTES64 MON DSCPL VMX EST TM2 SSSE3 FMA CX16 TPR PDCM SSE4.1 SSE4.2 x2APIC MOVBE POPCNT AES PCID XSAVE OSXSAVE SEGLIM64 TSCTMR AVX1.0 RDRAND F16C
machdep.cpu.leaf7_feature_bits: 43804591
machdep.cpu.leaf7_features: SMEP ERMS RDWRFSGS TSC_THREAD_OFFSET BMI1 AVX2 BMI2 INVPCID SMAP RDSEED ADX IPT SGX FPU_CSDS MPX CLFSOPT
machdep.cpu.logical_per_package: 16
machdep.cpu.max_basic: 22
machdep.cpu.max_ext: 2147483656
machdep.cpu.microcode_version: 150
machdep.cpu.model: 158
machdep.cpu.processor_flag: 5
machdep.cpu.signature: 591594
machdep.cpu.stepping: 10
machdep.cpu.thread_count: 12
machdep.cpu.tlb.data.small: 64
machdep.cpu.tlb.data.small_level1: 64
machdep.cpu.tlb.inst.large: 8
machdep.cpu.vendor: GenuineIntel
machdep.cpu.xsave.extended_state: 31 832 1088 0
machdep.tsc.deep_idle_rebase: 1
machdep.tsc.frequency: 2208000000
machdep.tsc.nanotime.generation: 840
machdep.tsc.nanotime.shift: 0
net.inet.ip.forwarding: 0
net.inet.ip.portrange.first: 49152
net.inet.ip.portrange.hifirst: 49152
net.inet.ip.portrange.hilast: 65535
net.inet.ip.portrange.last: 65535
net.inet.ip.portrange.lowfirst: 1023
net.inet.ip.portrange.lowlast: 600
net.inet.ip.redirect: 1
net.inet.ip.ttl: 64
net.inet.udp.checksum: 1
net.inet.udp.maxdgram: 9216
vm.loadavg: { 1.66 1.62 1.58 }
vm.swapusage: total = 4096.00M  used = 2860.00M  free = 1236.00M  (encrypted)
user.bc_base_max: 99
user.bc_dim_max: 2048
user.bc_scale_max: 99
user.bc_string_max: 1000
user.coll_weights_max: 2
user.cs_path: /usr/bin:/bin:/usr/sbin:/sbin
user.expr_nest_max: 32
user.line_max: 2048
user.posix2_c_bind: 0
user.posix2_c_dev: 0
user.posix2_char_term: 0
user.posix2_fort_dev: 0
user.posix2_fort_run: 0
user.posix2_localedef: 0
user.posix2_sw_dev: 0
user.posix2_upe: 0
user.posix2_version: 200112
user.re_dup_max: 255