# phpman > man > lsdev(8)

[LSDEV(8)](https://www.chedong.com/phpMan.php/man/LSDEV/8/markdown)                                 Linux System Manual                                [LSDEV(8)](https://www.chedong.com/phpMan.php/man/LSDEV/8/markdown)



## NAME
       lsdev - display information about installed hardware


## SYNOPSIS
### lsdev


## DESCRIPTION
       **lsdev**  gathers  information about your computer's installed hardware from the **interrupts,** **io**‐‐
       **ports** and **dma** files in the **/proc** directory, thus giving you a quick overview of  which  hard‐
       ware uses what I/O addresses and what IRQ and DMA channels.


## OPTIONS
       None.


## FILES
### /proc/interrupts
              IRQ channels.


### /proc/ioports
              I/O memory addresses.


### /proc/dma
              DMA channels.


## BUGS
       **lsdev**  can't  always  figure out which lines in the three examined files refer to one and the
       same device, because these files sometimes use different names for the same  piece  of  hard‐
       ware.  For example, in some kernels the keyboard is referred to as `kbd' in **/proc/ioports** and
       as `keyboard' in **/proc/interrupts.**  This should be fixed in the kernel, not in **lsdev** (as  has
       indeed happened for this particular example).

       The  program  does  however  try  to  match lines by stripping anything after a space or open
       parenthesis from the name, so that e.g. the `serial' lines from  **/proc/interrupts**  match  the
       `serial(set)'  lines  from  **/proc/ioports.**  This attempt at DWIM might be considered a bug in
       itself.

       This program only shows the kernel's **idea** of what hardware is present,  not  what's  actually
       physically available.


## SEE ALSO
       [procinfo(8)](https://www.chedong.com/phpMan.php/man/procinfo/8/markdown).


## AUTHOR
       Sander van Malssen <<svm@kozmix.cistron.nl>>



3rd Release                                  1998-05-31                                     [LSDEV(8)](https://www.chedong.com/phpMan.php/man/LSDEV/8/markdown)