linux查看操作系统(linux查看操作系统内存指令)

linux查看系统cpu信息

cat /proc/cpuinfo 查看系统cpu信息# 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# 查看物理CPU个数cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l# 查看每个物理CPU中core的个数(即核数)cat /proc/cpuinfo| grep "cpu cores"| uniq# 查看逻辑CPU的个数cat /proc/cpuinfo| grep "processor"| wc -l

cat /proc/interrupts 显示中断

cat /proc/meminfo 校验内存使用

cat /proc/swaps 显示哪些swap被使用

[hadoop@localhost ~]$ cat /proc/swapsFilename Type Size Ud Priority/dev/sda2 partition 2097148 1070592 -1

cat /proc/version 显示内核的版本

[hadoop@localhost ~]$ cat /proc/versionLinux version 3.10.0-862.3.3.el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC) ) #1 SMP Fri Jun 15 04:15:27 UTC 2018

cat /proc/net/dev 显示网络适配器及统计

cat /proc/mounts 显示已加载的文件系统

[hadoop@localhost ~]$ cat /proc/mountsrootfs / rootfs rw 0 0sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0devtmpfs /dev devtmpfs rw,nosuid,size=482584k,nr_inodes=120646,mode=755 0 0devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,relea_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd 0 0cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0/dev/sda3 / xfs rw,relatime,attr2,inode64,noquota 0 0sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0tmpfs /run/ur/1002 tmpfs rw,nosuid,nodev,relatime,size=99796k,mode=700,uid=1002,gid=1002 0 0

[hadoop@localhost etc]$ cat /proc/partitions所有设备的所有分区

major minor #blocks name8 0 20971520 sda8 1 307200 sda18 2 2097152 sda28 3 18566144 sda37 0 104857600 loop07 1 2097152 loop1253 0 104857600 dm-0

lspci -tv 罗列 PCI 设备

lsusb -tv 显示 USB 设备

[hadoop@localhost d4]$ lsusb -tv/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M|__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/7p, 12M/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M

2022-9-21