How To Get BIOS, FIRMWARE And Installed Drivers Details


How to get the BIOS (Basic Input Output System) information and other information such as
2.CPU information
3.Drivers installed in Linux machine.

For every operation/work in Linux there will be one command, this is true.(all you need to find out that command is use. Google to get it). So how to get BIOS info without rebooting the system. The command for this is dmidecode(DMI table decoder). Some times BIOS is called as DMI too. Just execute the command, It will just dump lots and lots of information about the sytem.

To get more presised/cliped information for particular category such as only BIOS or only hardware or only RAM details or just only CPU info we have to specify the type(--tyep or -t option), here are the types list for your reference.

The SMBIOS specification defines the following DMI types:

Type Information
1 System
2 Base Board
3 Chassis

4 Processor
5 Memory Controller
6 Memory Module
7 Cache
8 Port Connector

9 System Slots
10 On Board Devices
11 OEM Strings
12 System Configuration Options
13 BIOS Language
14 Group Associations
15 System Event Log
16 Physical Memory Array
17 Memory Device
18 32-bit Memory Error
19 Memory Array Mapped Address
20 Memory Device Mapped Address
21 Built-in Pointing Device
22 Portable Battery
23 System Reset
24 Hardware Security
25 System Power Controls
26 Voltage Probe
27 Cooling Device
28 Temperature Probe
29 Electrical Current Probe
30 Out-of-band Remote Access
31 Boot Integrity Services
32 System Boot
33 64-bit Memory Error
34 Management Device
35 Management Device Component

36 Management Device Threshold Data
37 Memory Channel
38 IPMI Device
39 Power Supply

Here is some examples.
Note : In RHEL4 there are no options for dmidecode command.

To find only BIOS info

#dmidecode –t 0
[root@test ~]# dmidecode --type 0
# dmidecode 2.7
SMBIOS 2.5 present.

Handle 0x0000, DMI type 0, 24 bytes.
BIOS Information
Vendor : Phoenix Technologies, LTD
Version : MS7352 1.14
Release Date : 09/03/2008
Address : 0xE0000
Runtime Size : 128 kB
ROM Size : 1024 kB
ISA is supported
PCI is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
5.25"/360 KB floppy services are supported (int 13h)
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 KB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
LS-120 boot is supported
ATAPI Zip drive boot is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
BIOS Revision: 1.14
Even we can specify keyword for specifying type if you forget the type number, so just type the keyword to check particular property of the styem.

Keyword Types
bios 0, 13
system 1, 12, 15, 23, 32
baseboard 2, 10
chassis 3
processor 4
memory 5, 6, 16, 17
cache 7
connector 8
slot 9

Suppose we want to see system details

[root@test ~]# dmidecode --type system
# dmidecode 2.7
SMBIOS 2.5 present.

Handle 0x0001, DMI type 1, 27 bytes.
System Information :
Manufacturer : Hewlett-Packard
Product Name : HP Compaq dx7400 Microtower
Serial Number: SGH83801NJ
UUID: 809AF9C0-17F0-1310-9511-C4681D1F835D
Wake-up Type: Power Switch
SKU Number: GD384AV
Family: 103C_53307F

Handle 0x0024, DMI type 32, 11 bytes.
System Boot Information
Status: No errors detected

[root@test ~]#

Some other useful commands to get system info are

To get CPU info
#cat /etc/cpuinfo

To get HW info


To get PCI info

To get USB info
Please comment your thoughts about this post.

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  • How To Use VNSTAT To Monitor Bandwidth Usage.


    There are so many tools to monitor network such as MRTG, now I am going to explain such tool which monitors bandwidth for a system, ie vnstat(view network statistics). Its very much easy to install and configure.

    This tool can give you full details about how much bandwidth used on the basics of,

    Per month.

    Per week.

    Per day.

    Per hour.

    Per second.

    Even we can see live traffic. This is awesome tool .

    So all the tools will not only have advantages but also disadvantages, here are they:
    1)Can not monitor multiple interfaces at a time.
    2)Can not monitor remote host.
    3)Can not monitor per host statistics(which is verymuch useful to find the network hogger, if you want per host bandwidth analyser then use iptables counters for it).

    Before configuring vnstat, one thing we have to keep in mind that vnstat is a aggregating tool which is required to run at regular intervals to monitor network bandwidth. So by default when we install vnstat a cron job is created at /etc/cron.d folder.

    Step1 : installing vnstat

    #rpm –ivh vnstat-1.6-2.fc9.i386.rpm

    Step2 : Configuring vnstat.
    As I mention earlier that vnstat is an aggregate tool so it should run background by using crontab, So first edit the cron job

    Vi /etc/cron.d/vnstat
    */5 * * * * vnstat /usr/sbin/vnstat.cron
    Add the above line to the file, then save it and exit.

    Step3 : Specifying which interface to monitor

    #vnstat –I interfacename

    Example :
    [root@test ~]# vnstat -i eth0
    Error :
    Unable to read database "/var/lib/vnstat/eth0".
    eth0: Not enough data available yet.

    Don’t worry about error intitially it will show error because it’s the first time you are executing that command, so it has to create DB.

    Step4 : Monitoring bandwidth with different intervals

    Type1 : For live traffic

    #vmstat –l
    -l is nothing but live
    [root@test ~]# vnstat -l
    Monitoring eth0... (press CTRL-C to stop)
    rx: 8.32 kB/s 30 p/s tx: 0.19 kB/s 0 p/s
    eth0 / traffic statistics
    rx tx
    bytes 206 kB 4 kB
    max 11.19 kB/s 0.24 kB/s
    average 7.96 kB/s 0.19 kB/s
    min 6.35 kB/s 0.11 kB/s
    packets 695 16
    max 61 p/s 2 p/s
    average 26 p/s 0 p/s
    min 9 p/s 0 p/s
    time 26 seconds

    Type2 :For monitoring traffic per second

    #vmstattr 5
    This command will monitor bandwidth for 5 seconds and give you the output.

    Type3 : For hourly

    #vmstat –h

    Example :
    [root@test ~]# vnstat -h
    eth0 21:00
    ^ r
    22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
    h rx (kB) tx (kB) h rx (kB) tx (kB) h rx (kB) tx (kB)
    22 0 0 06 0 0 14 0 0
    23 0 0 07 0 0 15 0 0
    00 0 0 08 0 0 16 0 0
    01 0 0 09 0 0 17 0 0
    02 0 0 10 0 0 18 0 0
    03 0 0 11 0 0 19 0 0
    04 0 0 12 0 0 20 12,614 41
    05 0 0 13 0 0 21 0 0
    Type4:For dialy

    #vmstat –d
    Example :
    [root@test ~]# vnstat -d
    eth0 / daily
    day rx tx total
    09.09. 12.32 MB 41 kB 12.36 MB %%%%%%%%%%%%%%%%%%%%%%%%%
    estimated -- -- --

    Type5 : For weekly

    #vmstat –w

    Example :
    [root@test ~]# vnstat -w
    eth0 / weekly
    rx tx total
    last 7 days 12.32 MB 41 kB 12.36 MB
    current week 12.32 MB 41 kB 12.36 MB
    estimated -- -- --

    Type6 : For monthly
    #vmstat –m
    Example :
    [root@test ~]# vnstat -m
    eth0 / monthly
    month rx tx total
    Sep '09 12.32 MB 41 kB 12.36 MB %%%%%%%%%%%%%%%%%%%%%%

    Please comment your thoughts about VNSTAT.

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  • 8 Ways To Mount SMBfs (SAMBA FILE SYSTEM) In Linux.


    How to Mount smbfs (SAMBA file system) permanently in Linux.In this post I am going to give some examples how to do SMB (Server Message Block) mounts..

    Type1 : Listing SMB shared folder through command prompt
    #smbclient –L ipadd –U username
    Here –L will specify listing of SMB share for the server with ipadd
    #smbclient // –U username

    Example :
    #smbclient –L –U root

    Type2 : Mounting SMB share on local folder by using smbmount command
    #smbmount //ipadd/sharename /mountpoint –o username=userid,workgroup=workgroupname
    Example :
    #smbmount // /mnt –o username=steev,workgroup=test

    Type3 : Mounting SMB share by using mount command
    #mount –t smbfs ipadd:/sharename /mountpoint –o username=userid,workgroup=workgroupname
    #mount –t smbfs //ipadd/sharename /mountpoint –o username=userid,workgroup=workgroupname

    Example :
    #mount –t smbfs /mnt –o username=surendra,workgroup=test

    Type4 : Mounting CIFS (Common Internet File System) is nothing but a advanced SMB file system implementation which support RAP (Remote Access Protocol)
    #mount –t cifs ipadd:/sharename /mountpoint –o username=userid,workgroup=workgroupname

    Example :
    #mount –t cifs /test –o username=Surendra,workgroup=test

    Type5 : All the above commands will ask password to display/mount the share name, however we can specify the password in command itself as below
    #mount -t smbfs -o username=userid,workgroup=workgroupname,password=XXXXX //ipadd/sharepoint /mountpoint/

    Example :
    #mount –t smbfs –o username=Surendra,workgroup=test,password=xylBJRS8 // /test

    Type6 : Mounting permanently by editing /etc/fstab file, below is the fstab file entry example
    #vi /etc/fstab// /test smbfs rw,user,username=surendra,password=xylBJRS8 0 0
    Save and exit the file and conform that you edited fstab file properly. By below commands
    #mount –a
    This command should not through any error,
    #df –H
    This command should show mount from server

    Type7 : Mounting a share where user belongs to a domain permanently by editing /etc/fstab file
    The above command will not work properly for domain users so we have to specify domain as well when specifying username
    So now username will be changed to domain\username
    #vi /etc/fstab
    // /mnt smbfs rw,user,username=test\surendra,password=xylBJRS8 0 0
    Save the file and exit then execute mount –a and df –H for just conformation if the mount is done successfully.

    Type8:As you people know /etc/fstab file is visible to all the users who logged in, so specifying user password in /etc/fstab file is not that much good procedure.. So there is a work around to resolve this issue, just create a credential file in users home directory and point that file in /etc/fstab file entry as mention below.
    #cd ~
    #echo username=surendra > .smbfile
    #echo password=xylBJRS8 >> .smbfile
    #chmod 600 .smbfile
    Then edit the /etc/fstab file and specify the entries as below
    #vi /etc/fstab
    // /mnt smbfs credentials=/home/myhomedirectoryofuser/. smbfile,rw,user 0 0
    Save and exit the file and execute mount –a, df –H to check if you did any mistakes..

    Please comment your experience on SMB.

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