Find Linux RAM Information Command and system information

 

You need to use the free command:
# free
# free -m

             total       used       free     shared    buffers     cached
Mem:          7930       4103       3826          0         59       2060
-/+ buffers/cache:       1983       5946
Swap:        15487          0      15487

For system information:

You need to use the dmidecode command:

# dmidecode –type 17
OR
# dmidecode –type memory
OR
# dmidecode -t 17

Sample outputs:

# dmidecode 2.11
SMBIOS 2.5 present.
Handle 0x0017, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0016
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: DIMM1A
Bank Locator: Bank1
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: 5185
Serial Number: 05009F22
Asset Tag: Not Specified
Part Number: 72T232220HFA3SB

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