linux 查看系统版本及硬件信息
----------------CPU----------------查看CPU型号等详细信息1)通用方法cat /proc/cpuinfo processor : 0vendor_id : GenuineIntelcpu family : 6model : 46model name : Intel(R
查看CPU型号等详细信息
1)通用方法
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 46
model name : Intel(R) Xeon(R) CPU E7520 @ 1.87GHz
stepping : 6
cpu MHz : 1064.000
cache size : 18432 KB
physical id : 0
……
# 总核数 = 物理CPU个数 X 每颗物理CPU的核数
# 总逻辑CPU数 = 物理CPU个数 X 每颗物理CPU的核数 X 超线程数
① 查看物理CPU的个数
#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
2
② 查看逻辑CPU的个数
#cat /proc/cpuinfo |grep "processor"|wc -l
24
③ 查看CPU是几核
#cat /proc/cpuinfo |grep "cores"|uniq
6
2)CentOS方法
lscpu
Architecture: i686
CPU op-mode(s): 32-bit, 64-bit
CPU(s): 16
Thread(s) per core: 2
Core(s) per socket: 4
CPU socket(s): 2
Vendor ID: GenuineIntel
CPU family: 6
Model: 46
Stepping: 6
CPU MHz: 1064.000
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 18432K
----------------内存----------------
查看内存使用情况
free -m
total used free shared buffers cached
Mem: 32158 2383 29775 0 466 862
-/+ buffers/cache: 1054 31104
Swap: 0 0 0
查看内存详信息
cat /proc/meminfo
MemTotal: 14409828 kB
MemFree: 7795036 kB
Buffers: 361792 kB
Cached: 5762836 kB
SwapCached: 0 kB
Active: 2755200 kB
……
查看内存插槽总数、已使用的插槽数及每插槽内存条容量
dmidecode|grep -P -A5 "Memory\s+Device"|grep Size|grep -v Range
Size: 4096 MB
Size: 4096 MB
Size: No Module Installed
Size: No Module Installed
查看支持最大内存容量
dmidecode|grep -P 'Maximum\s+Capacity'
Maximum Capacity: 256 GB
查看磁盘使用情况 2秒钟刷新一次
iostat -d -x /dev/sda1 2
Linux 2.6.18-164.el5 (meter1) 07/22/2015
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda1 0.00 0.22 0.00 0.15 0.07 2.91 19.83 0.00 3.96 0.84 0.01
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda1 0.00 2.00 0.00 6.50 0.00 68.00 10.46 0.02 3.62 0.38 0.25
----------------网卡----------------
dmesg |grep -i eth
lspci |grep -i eth
ifconfig -a
ip link
----------------查看HBA卡----------------
cat /sys/class/fc_host/host*/port_name
所有关于HBA的信息都可以在cat /sys/class/fc_host/host*/ 目录下通过cat查看。
如速率 cat /sys/class/fc_host/host*/speed
如状态 cat /sys/class/fc_host/host*/port_state
如类型 cat /sys/class/fc_host/host*/port_type 等等
----------------操作系统版本----------------
查看当前操作系统内核信息uname -a
Linux meter1 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
查看当前操作系统发行版信息
1)通用方法
cat /etc/issue |grep Linux
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
2) 可用方法
cat /etc/redhat-release
CentOS Linux release 6.0 (Final)
3)只支持redhat等部分linux
lsb_release -a
LSB Version: :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: RedHatEnterpriseServer
Description: Red Hat Enterprise Linux Server release 5.4 (Tikanga)
Release: 5.4
Codename: Tikanga
4)查看当前操作系统内核GCC版本
cat /proc/version
Linux version 2.6.18-164.el5 (mockbuild@x86-003.build.bos.redhat.com) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Tue Aug 18 15:51:48 EDT 2009
----------------综合信息----------------
系统硬件运行状态信息(即开机后的硬件运行状态信息)dmesg
dmidecode --help
Usage: dmidecode [OPTIONS]
Options are:
-d, --dev-mem FILE Read memory from device FILE (default: /dev/mem)
-h, --help Display this help text and exit
-q, --quiet Less verbose output
-s, --string KEYWORD Only display the value of the given DMI string
-t, --type TYPE Only display the entries of given type
-u, --dump Do not decode the entries
--dump-bin FILE Dump the DMI data to a binary file
--from-dump FILE Read the DMI data from a binary file
-V, --version Display the version and exit
查看PCI信息,即主板所有硬件槽信息
lspci
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