查看内存
free -m : 以M为单位进行展示内存使用情况
total used free shared buff/cache available Mem: 3951 1797 910 4 1243 1853 Swap: 0
free -g : 以G为单位进行展示内存使用情况
total used free shared buff/cache available Mem: 3 1 0 0 1 1 Swap: 0 0 0
以G为单位且"退一法"策略,精度不够准确
查看系统版本号
cat /etc/issue
Ubuntu 16.04.3 LTS \n \l
查看CPU主频信息
Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 2 On-line CPU(s) list: 0,1 Thread(s) per core: 2 Core(s) per socket: 1 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 79 Model name: Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz Stepping: 1 CPU MHz: 2494.222 BogoMIPS: 4988.44 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 40960K NUMA node0 CPU(s): 0,1 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm rdseed adx smap xsaveopt
查看系统的ip地址
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP> inet 127.0.0.1 netmask 0xff000000 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 nd6 options=201<PERFORMNUD,DAD> gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280 stf0: flags=0<> mtu 1280 XHC1: flags=0<> mtu 0 XHC20: flags=0<> mtu 0 XHC0: flags=0<> mtu 0 en6: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether ac:de:48:00:11:22 inet6 fe80::aede:48ff:fe00:1122%en6 prefixlen 64 scopeid 0x7 nd6 options=201<PERFORMNUD,DAD> media: autoselect status: active en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 78:4f:43:51:7c:f3 inet 15.38.229.23 netmask 0xfffff800 broadcast 15.38.231.255 media: autoselect status: active p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304 ether 0a:4f:43:51:7c:f3 media: autoselect status: inactive awdl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484 ether fa:83:12:04:95:ed inet6 fe80::f883:12ff:fe04:95ed%awdl0 prefixlen 64 scopeid 0xa nd6 options=201<PERFORMNUD,DAD> media: autoselect status: active en1: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 options=60<TSO4,TSO6> ether ee:00:78:72:c1:01 media: autoselect <full-duplex> status: inactive en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 options=60<TSO4,TSO6> ether ee:00:78:72:c1:00 media: autoselect <full-duplex> status: inactive en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 options=60<TSO4,TSO6> ether ee:00:78:72:c1:05 media: autoselect <full-duplex> status: inactive en4: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500 options=60<TSO4,TSO6> ether ee:00:78:72:c1:04 media: autoselect <full-duplex> status: inactive bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 options=63<RXCSUM,TXCSUM,TSO4,TSO6> ether ee:00:78:72:c1:01 Configuration: id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0 maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200 root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0 ipfilter disabled flags 0x2 member: en1 flags=3<LEARNING,DISCOVER> ifmaxaddr 0 port 11 priority 0 path cost 0 member: en2 flags=3<LEARNING,DISCOVER> ifmaxaddr 0 port 12 priority 0 path cost 0 member: en3 flags=3<LEARNING,DISCOVER> ifmaxaddr 0 port 13 priority 0 path cost 0 member: en4 flags=3<LEARNING,DISCOVER> ifmaxaddr 0 port 14 priority 0 path cost 0 media: <unknown type> status: inactive utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000 inet6 fe80::d73b:4182:e869:9982%utun0 prefixlen 64 scopeid 0x10 nd6 options=201<PERFORMNUD,DAD>
查看系统的CPU详细信息
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz stepping : 1 microcode : 0x1 cpu MHz : 2494.222 cache size : 40960 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm rdseed adx smap xsaveopt bugs : bogomips : 4988.44 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz stepping : 1 microcode : 0x1 cpu MHz : 2494.222 cache size : 40960 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm rdseed adx smap xsaveopt bugs : bogomips : 4988.44 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management:
