（6）查看硬盘使用情况

[root@Master ~]# df -hT

Filesystem     Type   Size  Used Avail Use% Mounted on

/dev/sda2      ext4    99G  561M   93G   1% /

tmpfs          tmpfs   63G   76K   63G   1% /dev/shm

/dev/sda1      ext4    45M   38M  4。9M  89% /boot

/dev/sda3      ext4    50G   52M   47G   1% /home

/dev/sda6      ext4    13G   34M   13G   1% /tmp

/dev/sda7      ext4    99G   21G   73G  23% /usr

/dev/sdb1      ext4    84T   41T   40T  51% /PureDisk

 （7） 硬盘检测命令smartctl

[root@Master ~]# smartctl -a /dev/sda

smartctl 5。43 2012-06-30 r3573 [x86_64-linux-2。6。32-642。el6。x86_64] (local build)

Copyright (C) 2002-12 by Bruce Allen, http://smartmontools。sourceforge。net

Vendor:               HP     

Product:              LOGICAL VOLUME 

Revision:             3。56

User Capacity:        299,966,445,568 bytes [299 GB]

Logical block size:   512 bytes

Logical Unit id:      0x600508b1001cc8a1b9ec4dacc5ab35dc

Serial number:        PDNNK0BRH9U0AG 

Device type:          disk

Local Time is:        Mon Feb  5 13:13:33 2018 CST

Device supports SMART and is Enabled

Temperature Warning Disabled or Not Supported

SMART Health Status: OK

Error Counter logging not supported

Device does not support Self Test logging

五、查看网卡信息

（1)查看网卡硬件信息

[root@Master ~]#  lspci | grep -i 'eth'

   (2)查看系统的所有网络接口

[root@Master ~]# ifconfig -a

[root@Master ~]# ip link show

    (3)查看某个网络接口的详细信息，例如eth0的详细参数和指标

[root@Master ~]# ethtool eth0

Settings for eth0:

        Supported ports: [ FIBRE ]

        Supported link modes:   10000baseT/Full 

        Supported pause frame use: No

        Supports auto-negotiation: No

        Advertised link modes:  10000baseT/Full 

        Advertised pause frame use: No

        Advertised auto-negotiation: No

        Speed: 10000Mb/s

        Duplex: Full

        Port: FIBRE

        PHYAD: 0

        Transceiver: external

        Auto-negotiation: off

        Supports Wake-on: d