或者是
[email protected]:/home/peng# ip link show1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:002: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000link/ether 00:0c:29:bb:bd:40 brd ff:ff:ff:ff:ff:ff或者
如果要查看某个网络接口的详细信息，例如ens33的详细参数和指标

[email protected]:/home/peng# ethtool ens33Settings for ens33: Supported ports: [ TP ] Supported link modes:10baseT/Half 10baseT/Full100baseT/Half 100baseT/Full #支持千兆半双工，全双工模式1000baseT/FullSupported pause frame use: No Supports auto-negotiation: Yes #默认使用自适应模式 Advertised link modes:10baseT/Half 10baseT/Full100baseT/Half 100baseT/Full1000baseT/FullAdvertised pause frame use: No Advertised auto-negotiation: Yes Speed: 1000Mb/s #网卡的速度是1000Mb Duplex: Full#全双工 Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on MDI-X: off (auto) Supports Wake-on: d Wake-on: d Current message level: 0x00000007 (7)drv probe link Link detected: yes#表示有网线连接，和路由是通的5. pci查看pci信息，即主板所有硬件槽信息 。
[email protected]:/home/peng# lspci 00:00.0 Host bridge: Intel Corporation 82845 845 (Brookdale) Chipset Host Bridge (rev 04) 00:01.0 PCI bridge: Intel Corporation 82845 845 (Brookdale) Chipset AGP Bridge(rev 04) 00:1d.0 USB Controller: Intel Corporation 82801CA/CAM USB (Hub #1) (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801CA/CAM USB (Hub #2) (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 42) 00:1f.0 ISA bridge: Intel Corporation 82801CAM ISA Bridge (LPC) (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801CAM IDE U100 (rev 02) 00:1f.3 SMBus: Intel Corporation 82801CA/CAM SMBus Controller (rev 02) 00:1f.5 Multimedia audio controller:Intel Corporation 82801CA/CAM AC'97 Audio Controller (rev 02) 00:1f.6 Modem: Intel Corporation 82801CA/CAM AC'97 Modem Controller (rev 02) 01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 420 Go](rev a3) 02:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller(rev 46) 02:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+(rev 10) 02:04.0 CardBus bridge: O2 Micro, Inc. OZ6933 Cardbus Controller (rev 01) 02:04.1 CardBus bridge: O2 Micro, Inc. OZ6933 Cardbus Controller (rev 01)由上述的 输出可以看到，我的电脑上共有3个PCI总线(0号，1号，2号） 。在单个系统上，插入多个总线是通过桥（bridge)来完成的，桥是一种用来连接总线 的特殊PCI外设 。所以，PCI系统的整体布局组织为树型，我们可以通过上面的lspci输出，来画出我的电脑上的PCI系统的树型结构：
00:00.0(主桥）--00:01.0(PCI桥）-----01:00:0(nVidia显卡）||---00:1d(USB控制器)--00:1d:0(USB1号控制器）||||--00:1d:1(USB2号控制器）||-00:1e:0(PCI桥)--02:00.0(IEEE1394)||||-02:01.0(8139网卡）||||-02:04(CardBus桥)-02:04.0(桥1）||||--02:04.1(桥2)||-00:1f(多功能板卡)-00:1f:0(ISA桥）||--00:1f:1(IDE接口)||--00:1f:3(SMBus)||--00:1f:5(多媒体声音控制器)||--00:1f:6(调制解调器)由上图可以得出，我的电脑上共有8个PCI设备，其中0号总线上(主桥)上连有4个，1号总线上连有1个，2号总线上连有3个 。00:1f是一个连有5个功能的多功能板卡 。
如果要更详细的信息:
lspci -v 或者 lspci -vv如果要看设备树:lscpi -t
[email protected]:/home/peng# lspci -t6. usb查看usb信息
[email protected]:/home/peng# lsusbBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubBus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB HubBus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual MouseBus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub