学习手册：Linux硬件查询命令

Linux硬件查询命令学习手册

在Linux系统中，了解硬件信息对于系统维护和故障排除至关重要。以下是一些常用的Linux命令，可以帮助您查询系统的硬件信息。

1. 查看CPU信息

查看CPU信息可以使用以下命令：

- `cat /proc/cpuinfo`

这个命令会显示CPU的详细信息，包括型号、频率、缓存大小等。

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 63
model name      : Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
stepping        : 4
microcode       : 0x00000041
cpu MHz         : 1800.000
BogoMIPS        : 3600.00
cache size      : 3072 KB
physical id     : 0
 siblings        : 4
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 20
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts cld ccpi x2apic popcnt tsc_deadline_timer xsave avx lahf_lm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smap bmi2 erms
bogomips        : 3600.00
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:

2. 查看内存信息

查看内存信息可以使用以下命令：

- `free -m`

这个命令会显示内存的使用情况，包括总内存、已用内存、可用内存等。

              total        used        free      shared  buff/cache   available
Mem:           7944        4332        2762          0        1840        5632
Swap:          0          0          0

- `dmidecode -t memory`

这个命令会显示详细的内存信息，包括内存条的品牌、型号、容量等。

Handle 0x0002, DMI type 17, 24 bytes
Memory Device
	Slot Position: J4
	Handle: 0x0003
	Device Type: Memory Device
	Physical Size: 4096 MB
	Form Factor: DIMM
	Type Detail: DDR4
	Speed: 2666 MHz (DDR4-2666)
	Manufacturer: Samsung
	Serial Number: 9K4K5D7
	Part Number: M471A1K43HB1-0000
	Supplier ID: 0x104
	Asset Tag: 
	Features: 
		Readable
		Writable
		Readable/Writable
	Readable/Writeable
	Pre-installation Test
		Not Supported
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