linux command to show memory hardware
# lshw - List Hardware
$ sudo lshw -short
H/W path Device Class Description
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system ()
/0 bus DG35EC
/0/0 processor Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz
/0/0/1 memory 2MiB L2 cache
/0/0/3 memory 32KiB L1 cache
/0/2 memory 32KiB L1 cache
/0/4 memory 64KiB BIOS
/0/14 memory 8GiB System Memory
/0/14/0 memory 2GiB DIMM DDR2 Synchronous 667 MHz (1.5 ns)
/0/14/1 memory 2GiB DIMM DDR2 Synchronous 667 MHz (1.5 ns)
/0/14/2 memory 2GiB DIMM DDR2 Synchronous 667 MHz (1.5 ns)
/0/14/3 memory 2GiB DIMM DDR2 Synchronous 667 MHz (1.5 ns)
/0/100 bridge 82G35 Express DRAM Controller
/0/100/2 display 82G35 Express Integrated Graphics Controller
/0/100/2.1 display 82G35 Express Integrated Graphics Controller
/0/100/19 eth0 network 82566DC Gigabit Network Connection
/0/100/1a bus 82801H (ICH8 Family) USB UHCI Controller #4
/0/100/1a.1 bus 82801H (ICH8 Family) USB UHCI Controller #5
/0/100/1a.7 bus 82801H (ICH8 Family) USB2 EHCI Controller #2
/0/100/1b multimedia 82801H (ICH8 Family) HD Audio Controller
/0/100/1c bridge 82801H (ICH8 Family) PCI Express Port 1
/0/100/1c.1 bridge 82801H (ICH8 Family) PCI Express Port 2
/0/100/1c.2 bridge 82801H (ICH8 Family) PCI Express Port 3
/0/100/1c.2/0 storage JMB368 IDE controller
/0/100/1d bus 82801H (ICH8 Family) USB UHCI Controller #1
/0/100/1d.1 bus 82801H (ICH8 Family) USB UHCI Controller #2
/0/100/1d.2 bus 82801H (ICH8 Family) USB UHCI Controller #3
/0/100/1d.7 bus 82801H (ICH8 Family) USB2 EHCI Controller #1
/0/100/1e bridge 82801 PCI Bridge
/0/100/1e/5 bus FW322/323 [TrueFire] 1394a Controller
/0/100/1f bridge 82801HB/HR (ICH8/R) LPC Interface Controller
/0/100/1f.2 storage 82801H (ICH8 Family) 4 port SATA Controller [IDE mode]
/0/100/1f.3 bus 82801H (ICH8 Family) SMBus Controller
/0/100/1f.5 storage 82801HR/HO/HH (ICH8R/DO/DH) 2 port SATA Controller [IDE m
/0/1 scsi3 storage
/0/1/0.0.0 /dev/sda disk 500GB ST3500418AS
/0/1/0.0.0/1 /dev/sda1 volume 70GiB Windows NTFS volume
/0/1/0.0.0/2 /dev/sda2 volume 395GiB Extended partition
/0/1/0.0.0/2/5 /dev/sda5 volume 97GiB HPFS/NTFS partition
/0/1/0.0.0/2/6 /dev/sda6 volume 97GiB Linux filesystem partition
/0/1/0.0.0/2/7 /dev/sda7 volume 1952MiB Linux swap / Solaris partition
/0/1/0.0.0/2/8 /dev/sda8 volume 198GiB Linux filesystem partition
/0/3 scsi4 storage
/0/3/0.0.0 /dev/cdrom disk DVD RW DRU-190A