How to check Manufacturer information in Linux

Option 1#
[root@said-db-serv ~]# dmidecode -t system
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.

Handle 0x0100, DMI type 1, 27 bytes
System Information
Manufacturer: Dell Inc.
Product Name: PowerEdge R440
Version: Not Specified
Serial Number: 1XZ19R2
UUID: 4C4C4544-0058-5A10-8031-B1C04F395232
Wake-up Type: Power Switch
SKU Number: SKU=NotProvided;ModelName=PowerEdge R440
Family: PowerEdge

Handle 0x0C00, DMI type 12, 5 bytes
System Configuration Options
Option 1: NVRAM_CLR: Clear user settable NVRAM areas and set defaults
Option 2: PWRD_EN: Close to enable password

Handle 0x2000, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected

[root@said-db-serv ~]#

Option 2#

[root@said-db-serv ~]# lshw -C system
utility-db-serv.bankasia-bd.com
    description: Rack Mount Chassis
    product: PowerEdge R440 (SKU=NotProvided;ModelName=PowerEdge R440)
    vendor: Dell Inc.
    serial: 1XZ19R2
    width: 64 bits
    capabilities: smbios-3.0.0 dmi-3.0.0 smp vsyscall32
    configuration: boot=normal chassis=rackmount family=PowerEdge sku=SKU=NotProvided;ModelName=PowerEdge R440 uuid=44454C4C-5800-105A-8031-B1C04F395232
  *-pnp00:00
       product: PnP device PNP0b00
       physical id: 9c
       capabilities: pnp
       configuration: driver=rtc_cmos
  *-pnp00:01
       product: PnP device PNP0c02
       physical id: 9d
       capabilities: pnp
       configuration: driver=system
  *-pnp00:05
       product: PnP device PNP0c02
       physical id: a1
       capabilities: pnp
       configuration: driver=system
  *-pnp00:06
       product: PnP device PNP0c02
       physical id: a2
       capabilities: pnp
       configuration: driver=system
[root@said-db-serv ~]#