lspci: command not found

lspci command lists all Peripheral Component Interconnect (PCI) devices. This command has many options that are useful for debugging device drivers. If we just run lspci, we get a list of devices and their IDs:

00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter
00:03.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 02)
00:04.0 System peripheral: InnoTek Systemberatung GmbH VirtualBox Guest Service
00:05.0 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio Controller (rev 01)
00:07.0 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)

Understanding lspci Command Output

The field givin in the output of lspci are as follows:

0000:06:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)

• 0000: PCI domain (each domain can contain up to 256 PCI buses)
• 06: the bus number the device is attached to
• 00: the device number
• .1: PCI device function
• Ethernet controller: device class
• Intel Corporation: vendor ID
• I350 Gigabit Network Connection (rev 01): device ID

The lspci command provides all the relevant information concerning the PCI devices of your server, which in turn, can be expanded by employing either the -v option or the alternative -vv / -vvv option(s), depending on the level of detail you require:

# lspci -v
# lspci -vv
# lspci -vvv

If you encounter the below error while running the lspci command:

lspci: command not found

you may try installing the pciutils package as shown below as per your choice of distribution:

lspci Command Examples

1. To list all PCI devices:

# lspci 

2. To Dump PCI device data in a backward-compatible machine readable form:

# lspci -m 

3. To Dump PCI device data in a machine readable form for easy parsing by scripts:

# lspci -mm 

4. To Show a tree-like diagram containing all buses:

# lspci -t 

5. To display in verbose mode:

# lspci -v 

6. To be very verbose:

# lspci -vv 

7. To be even more verbose:

# lspci -vvv 

8. To Show kernel drivers handling each device and also kernel modules capable of handling it:

# lspci -k 

9. To Show hexadecimal dump of the whole PCI configuration space:

# lspci -xxx 

10. To Show hexadecimal dump of the extended (4096-byte) PCI configuration space available on:

# lspci -xxxx 

11. For bus centric view:

# lspci -b 

12. To always show PCI domain numbers:

# lspci -D 

13. To show PCI vendor and device codes as numbers instead:

# lspci -n 

14. To show PCI vendor and device codes as both numbers and names:

# lspci -nn 

15. To use DNS to query the central PCI ID database if a device is not found in the local pci.ids file:

# lspci -q 

16. To reset local cache:

# lspci -qq 

17. To Query the central database even for entries which are recognized locally:

# lspci -Q 

18. To Show only devices in the specified domain:

# lspci -s domain 

19. To Show only devices with specified vendor and device ID:

# lspci -d vendor 

20. To Use as the PCI ID list instead of /usr/share/hwdata/pci.ids:

# lspci -i /path/file 

21. To Use as the map of PCI IDâs handled by kernel modules:

# lspci -p file 

22. To Invoke bus mapping mode which performs a thorough scan of all PCI devices:

# lspci -M 

23. To get the lspci version:

# lspci --version 

24. To The library supports a variety of methods to access the PCI hardware:

# lspci -A method 

25. To increase the debug level:

# lspci -G