You need to use command called lsdev. It gathers information about your computer's installed hardware from the interrupts, ioports and dma files in the /proc directory, thus giving you a quick overview of which hardware uses what I/O addresses and what IRQ and DMA channels.
Task display : CPU Information
$ cat /proc/cpuinfoTask: Display Free and used Memory Information
$ free -mTask: Display partition information
# fdisk -lTask: Display file system disk space usage
# df -HOR
# df -hTask: Estimate file space usage
# du Task: List PCI devices
# lspci Task: List USB devices
# lsusb Task display : More Information
$ lsdevOutput:
Device DMA IRQ I/O Ports
------------------------------------------------
0000:00:1d.0 d800-d81f
0000:00:1d.1 d000-d01f
0000:00:1d.2 d400-d41f
0000:00:1f.0 4000-407f 4080-40bf
0000:00:1f.1 f000-f00f
0000:00:1f.3 5000-501f
0000:00:1f.5 e000-e0ff e400-e43f
0000:01:05.0 c000-c0ff
8139too c000-c0ff
acpi 9
bttv0 22
cascade 4
dma 0080-008f
dma1 0000-001f
dma2 00c0-00df
ehci_hcd:usb4 20
eth0 18
fpu 00f0-00ff
GPE0_BLK 4028-402f
i8042 1 12
ICH4 21
ide0 14 01f0-01f7 03f6-03f6 f000-f007
ide1 15 0170-0177 0376-0376 f008-f00f
Intel e000-e0ff e400-e43f
keyboard 0060-006f
parport0 7 0378-037a
PCI 0cf8-0cff c000-cfff
pic1 0020-0021
pic2 00a0-00a1
PM1a_CNT_BLK 4004-4005
PM1a_EVT_BLK 4000-4003
PM_TMR 4008-400b
rtc 8 0070-0077
serial 02f8-02ff 03f8-03ff
timer 0
timer0 0040-0043
timer1 0050-0053
uhci_hcd d000-d01f d400-d41f d800-d81f
uhci_hcd:usb1 16
uhci_hcd:usb2 19
uhci_hcd:usb3 17
vga+ 03c0-03df