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# lspci
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## 说明
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**lspci命令** 用于显示当前主机的所有PCI总线信息，以及所有已连接的PCI设备信息
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## 选项
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```markdown
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-n：以数字方式显示PCI厂商和设备代码
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-t：以树状结构显示PCI设备的层次关系，包括所有的总线、桥、设备以及它们之间的联接
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-b：以总线为中心的视图
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-d：仅显示给定厂商和设备的信息
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-s：仅显示指定总线、插槽上的设备和设备上的功能块信息
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-i：指定PCI编号列表文件，而不使用默认的文件
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-m：以机器可读方式显示PCI设备信息
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Usage: lspci [<switches>]
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Basic display modes:
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-mm Produce machine-readable output (single -m for an obsolete format)
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-t Show bus tree
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Display options:
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-v Be verbose (-vv for very verbose)
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-k Show kernel drivers handling each device
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-x Show hex-dump of the standard part of the config space
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-xxx Show hex-dump of the whole config space (dangerous; root only)
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-xxxx Show hex-dump of the 4096-byte extended config space (root only)
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-b Bus-centric view (addresses and IRQ's as seen by the bus)
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-D Always show domain numbers
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Resolving of device ID's to names:
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-n Show numeric ID's
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-nn Show both textual and numeric ID's (names & numbers)
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-q Query the PCI ID database for unknown ID's via DNS
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-qq As above, but re-query locally cached entries
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-Q Query the PCI ID database for all ID's via DNS
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Selection of devices:
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-s [[[[<domain>]:]<bus>]:][<slot>][.[<func>]] Show only devices in selected slots
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-d [<vendor>]:[<device>][:<class>] Show only devices with specified ID's
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Other options:
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-i <file> Use specified ID database instead of /usr/share/hwdata/pci.ids
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-p <file> Look up kernel modules in a given file instead of default modules.pcimap
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-M Enable `bus mapping' mode (dangerous; root only)
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PCI access options:
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-A <method> Use the specified PCI access method (see `-A help' for a list)
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-O <par>=<val> Set PCI access parameter (see `-O help' for a list)
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-G Enable PCI access debugging
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-H <mode> Use direct hardware access (<mode> = 1 or 2)
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-F <file> Read PCI configuration dump from a given file
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```
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## 实例
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```bash
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lspci -tv # 显示PCI信息
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lspci | grep Ethernet # 显示网卡信息
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lspci | grep VGA
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```
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