linux查看操作系統(linux查看操作系統內存指令)

linux查看系統cpu信息

cat /proc/cpuinfo 查看系統cpu信息# 總核數=物理CPU個數X每顆物理CPU的核數# 總邏輯CPU數=物理CPU個數X每顆物理CPU的核數X超線程數# 查看物理CPU個數cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l# 查看每個物理CPU中core的個數(即核數)cat /proc/cpuinfo| grep "cpu cores"| uniq# 查看邏輯CPU的個數cat /proc/cpuinfo| grep "processor"| wc -l

cat /proc/interrupts 顯示中斷

cat /proc/meminfo 校驗內存使用

cat /proc/swaps 顯示哪些swap被使用

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

cat /proc/version 顯示內核的版本

[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 顯示網絡適配器及統計

cat /proc/mounts 顯示已加載的文件系統

[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所有設備的所有分區

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 羅列 PCI 設備

lsusb -tv 顯示 USB 設備

[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