linux 机器芯片架构查询 linux cpu型号查询

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hackernew 2023-09-04 18:23:39

文章标签 linux 机器芯片架构查询分隔符发行版 GNU 文章分类 架构后端开发

测试机器的硬件信息：
1）查看CPU信息（型号）
# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz
(看到有8个逻辑CPU, 也知道了CPU型号)

2）# cat /proc/cpuinfo | grep physical | uniq -c
      4 physical id      : 0
      4 physical id      : 1
(说明实际上是两颗4核的CPU)
3）# getconf LONG_BIT
   32
(说明当前CPU运行在32bit模式下, 但不代表CPU不支持64bit)
4）# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l
   8
(结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit)
再完整看cpu详细信息, 不过大部分我们都不关心而已.

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5）查看内存信息
# cat /proc/meminfo
6）# uname -a
Linux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 GNU/Linux
(查看当前操作系统内核信息)
6）# cat /etc/issue | grep Linux
Red Hat Enterprise Linux AS release 4 (Nahant Update 5)
(查看当前操作系统发行版信息)
7）查看机器型号
# dmidecode | grep "Product Name"
8）查看网卡信息
# dmesg | grep -i eth

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cut：http://tiankonghaikuo1000.blog.163.com/blog/static/182315972008212856182/

$ cut --help
Usage: cut [OPTION]... [FILE]...
Print selected parts of lines from each FILE to standard output.

Mandatory arguments to long options are mandatory for short options too.
-b, --bytes=LIST        select only these bytes
  -c, --characters=LIST   select only these characters
  -d, --delimiter=DELIM   use DELIM instead of TAB for field delimiter
-f, --fields=LIST       select only these fields; also print any line
                            that contains no delimiter character, unless
                            the -s option is specified -n                      (ignored)
      --complement        complement the set of selected bytes, characters
                            or fields.
-s, --only-delimited    do not print lines not containing delimiters
      --output-delimiter=STRING use STRING as the output delimiter
                            the default is to use the input delimiter
      --help     display this help and exit
      --version output version information and exit

Use one, and only one of -b, -c or -f. Each LIST is made up of one
range, or many ranges separated by commas. Selected input is written
in the same order that it is read, and is written exactly once.
Each range is one of:

N     N'th byte, character or field, counted from 1
N-    from N'th byte, character or field, to end of line
N-M   from N'th to M'th (included) byte, character or field
-M    from first to M'th (included) byte, character or field

With no FILE, or when FILE is -, read standard input.

Report bugs to <bug-coreutils@gnu.org>.

========================================================================
cut -c1,5,13 file 取出第1个第5个第13个字符

cut -c-5 file 取出前5个字符

cut -c5-13 file

cut -c13- file

cut -c1-5, 13- file

等等..

cut -d' ' -f2 file

取出第二个域默认情况下对于没有分隔符的也会被取出来

cut -d' ' -s -f2 file

同上, 只是没有分隔符的行不会被 output