on the system. You can use the dmesg command to see this information or find information about these devices under the Device File System directory /proc/devfs (see the Linux Devfs FAQ at if the source code for the Linux kernel is installed). The file /usr/src/linux-2.6/Documentation/usb/proc_usb_info.txt contains general information about USB and the /proc directory, as well as what to expect in files under this directory. Note that devfs might be supported, but will generally be obsolete in the 2.6 kernel because /proc/udev replaces it as a way of managing hot-plug devices on your system.

• Gettingthe kernel version in /proc/version, performance information such as uptime in /proc/uptime, or other statistics such as CPU load, swap file usage, and processes in


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