获取系统基本信息的命令_CentOS 7
2021-03-15 本文已影响0人
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获取系统基本信息的命令
- 查看系统版本
[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.8.2003 (Core)
- 查看cpu信息
[root@localhost ~]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 69
model name : Intel(R) Core(TM) i5-4210U CPU @ 1.70GHz
stepping : 1
microcode : 0x25
cpu MHz : 2394.462
cache size : 3072 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
- 查看ip地址
[root@localhost ~]# ifconfig ens33
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 1.1.2.128 netmask 255.255.255.0 broadcast 1.1.2.255
inet6 fe80::23a8:e0f:bc9f:358 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:47:d4:00 txqueuelen 1000 (Ethernet)
RX packets 418 bytes 49204 (48.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 249 bytes 40060 (39.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
- 查看系统内存、虚拟内存的大小及占用情况
[root@localhost ~]# free -h
total used free shared buff/cache available
Mem: 1.8G 641M 373M 26M 804M 997M
Swap: 2.0G 0B 2.0G
- 系统启动时的系统cpu、内存、网卡等信息。启动后可以用dmesg来查看，该命令用实例名和物理名称 来标识连到系统上的设备，也用于显示系统诊断信息，操作系统版本号，物理内存大小以及其他信息。
[root@localhost ~]# dmesg | more
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 3.10.0-1127.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) ) #1 SMP Tue Mar 31 23:36:51 UTC 2020
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.10.0-1127.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet LANG=zh_CN.UTF-
8
[ 0.000000] Disabled fast string operations
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ebff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009ec00-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000dc000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000007fedffff] usable
[ 0.000000] BIOS-e820: [mem 0x000000007fee0000-0x000000007fefefff] ACPI data
- 查看当前的进程
[root@localhost ~]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 23:15 ? 00:00:04 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
root 2 0 0 23:15 ? 00:00:00 [kthreadd]
root 4 2 0 23:15 ? 00:00:00 [kworker/0:0H]
root 6 2 0 23:15 ? 00:00:00 [ksoftirqd/0]
root 7 2 0 23:15 ? 00:00:00 [migration/0]
root 8 2 0 23:15 ? 00:00:00 [rcu_bh]
root 9 2 0 23:15 ? 00:00:03 [rcu_sched]
root 10 2 0 23:15 ? 00:00:00 [lru-add-drain]
root 11 2 0 23:15 ? 00:00:00 [watchdog/0]
root 12 2 0 23:15 ? 00:00:00 [watchdog/1]
root 13 2 0 23:15 ? 00:00:00 [migration/1]
root 14 2 0 23:15 ? 00:00:00 [ksoftirqd/1]
root 16 2 0 23:15 ? 00:00:00 [kworker/1:0H]
