How to view CPU, memory, machine model, and nic information in Linux

Do Performance TestingThe hardware information of the performance test machine needs to be recorded. The required commands are summarized as follows:

View CPU Information(Model)
# Cat/proc/cpuinfo | grep name | cut-F2-D: | uniq-C
8 Intel (r) Xeon (r) CPU e5410 @ 2.33 GHz
(We can see eight logical CPUs and the CPU model)

# Cat/proc/cpuinfo | grep physical | uniq-C
4 physical ID: 0
4 physical ID: 1
(It means two 4-core CPUs)
PS: Jay added on 10th, May, 2011
# In fact, there may be hyperthread HT technology, not necessarily 4-core, or 2-core, 4-thread. At that time, I still cannot understand it clearly.

# Getconf long_bit
32
(This indicates that the current CPU runs in 32bit mode, but does not indicate that the CPU does not support 64bit)

# Cat/proc/cpuinfo | grep flags | grep 'lm '| WC-l
8
(If the result is greater than 0, 64bit computing is supported. lm indicates long mode, and Lm indicates 64bit)


Let's take a full look at the CPU details, but we don't care about most of them.
# Dmidecode | grep 'processor information'

View memory information
# Cat/proc/meminfo

# Uname-
LinuxEuis1 2.6.9-55. elsmp #1 SMP Fri APR 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux
(View the current Operating SystemKernel information)

# Cat/etc/issue | grep Linux
Red Hat Enterprise Linux as Release 4 (nahant Update 5)
(View the released version of the current operating system)

View the Machine Model
# Dmidecode | grep "product name"

View Nic Information
# Dmesg | grep-I ETH