隐隐约约感觉到这两个关于PCI和USB总线的软件包很有用，如果想真正理解这些总线的硬件部分，或许得好好研究里面的相关代码！
usbutils-0.71-2.1:
URL:
Description
This package contains utilities for inspecting devices connected to a USB bus.
Size:89044
#rpm -ql usbutils
/sbin/lsusb
/usr/share/doc/usbutils-0.71
/usr/share/doc/usbutils-0.71/AUTHORS
/usr/share/doc/usbutils-0.71/COPYING
/usr/share/doc/usbutils-0.71/ChangeLog
/usr/share/doc/usbutils-0.71/INSTALL
/usr/share/doc/usbutils-0.71/NEWS
/usr/share/doc/usbutils-0.71/README
/usr/share/man/man8/lsusb.8.gz
pciutils-2.2.9-2:
URL: http://atrey.karlin.mff.cuni.cz/~mj/pciutils.shtml
Description
The pciutils package contains various utilities for inspecting and setting devices connected to the PCI bus. The utilities provided require kernel version 2.1.82 or newer(which support the /proc/bus/pci interface).
Size:180992
#rpm -ql pciutils
/sbin/lspci
/sbin/setpci
/sbin/update-pciids
/usr/share/doc/pciutils-2.2.9
/usr/share/doc/pciutils-2.2.9/ChangeLog
/usr/share/doc/pciutils-2.2.9/README
/usr/share/doc/pciutils-2.2.9/pciutils.lsm
/usr/share/man/man8/lspci.8.gz
/usr/share/man/man8/setpci.8.gz
/usr/share/man/man8/update-pciids.8.gz
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