OSA B9

B9:Java Program to display the list of devices connected to your system including the physical names and its instance number.

 

Program:

import java.io.*;

class ListDevice

{

 public static void main(String args[]) throws IOException

 {

  String line = null;

  Process ps = Runtime.getRuntime().exec("lspci");

BufferedReader reader = new BufferedReader(new InputStreamReader(ps.getInputStream()));

           

   System.out.println("Listing Devices using lspci command  ");

                       

    while((line = reader.readLine())!= null)

     {                     

     System.out.println(line);

      }         

                  ps = Runtime.getRuntime().exec("cat /proc/devices");

     reader = new BufferedReader(new InputStreamReader(ps.getInputStream()));

                       

                       

       System.out.println("Reading Device File  ");

                       

        while((line = reader.readLine())!= null)

        {                     

         System.out.println(line);

                        }         

            }

}

Output:

[student@localhost ~]$ javac ListDevice.java

[student@localhost ~]$ java ListDevice

Listing Devices using lspci command 

00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)

00:01.0 PCI bridge: Intel Corporation 4 Series Chipset PCI Express Root Port (rev 03)

00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)

00:02.1 Display controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)

00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)

00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01)

00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 01)

00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 01)

00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 01)

00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 01)

00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 01)

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)

00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)

00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)

00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] (rev 01)

00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 01)

02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe (rev 01)

Reading Device File 

Character devices:

  1 mem

  4 /dev/vc/0

  4 tty

  4 ttyS

  5 /dev/tty

  5 /dev/console

  5 /dev/ptmx

  7 vcs

 10 misc

 13 input

 14 sound

 21 sg

 29 fb

 99 ppdev

116 alsa

128 ptm

136 pts

162 raw

Block devices:

259 blkext

  7 loop

  8 sd

  9 md

 11 sr

 65 sd

 66 sd

 67 sd

 68 sd

 69 sd

 70 sd

 71 sd

128 sd