everything is as file in linux???

[bhupee]

what does it means when they say eveything in the linux is considered as file.
specially i am talking about the device(pcimci card etc.)
can anyone tell me how this files are associated with all this things
bye
bhupee

[trickster]

Everything under linux is accessed as if it was a file.
There is no gegistry, like in windows, to keep track of things.
For example, the first master hard disk under linux is accessed by accessing the file /dev/hda. the first partition under this drive is accessed by accessing /dev/hda1.
My scanner can be accesed under /proc/bus/usb/002/002.
The information of my cpu can be accessed by accesing /proc/cpuinfo.
Application settings are kept in files (no registry.)
And so on.

[trickster]

I found these links on google.

They might help you understand it better:

http://www.linuxplanet.com/linuxplan...orials/1019/1/

http://www.braino.org/blog/archives/000763.php

http://www.linux.com/article.pl?sid=03/11/26/1329202

[Tyr_7BE]

Are you familiar with the concept of memory-mapped I/O? It means that all devices, all input, all output...everything, is accessed as a file somewhere. For example, my hard drive is represented as /dev/hda. I can access it with the "mount" command. When I want to plug in my mp3 player and access it, I issue a "mount /dev/sda1 /mnt/lyra" and that makes /mnt/lyra my access point to my mp3 player (/dev/sda1 being the file that corresponds to the mp3 player). "umount /mnt/lyra" will make it safe to unplug the mp3 player again.