Answer / srikanth

netstat - Print network connections, routing tables,
interface statis-
tics, masquerade connections, and multicast memberships

vmstat - Report virtual memory statistics,

vmstat reports information about processes, memory,
paging, block IO,
traps, and cpu activity.

The first report produced gives averages since the
last reboot. Addi-
tional reports give information on a sampling
period of length delay.
The process and memory reports are instantaneous in
either case.

iostat - Report Central Processing Unit (CPU) statistics and
input/out-
put statistics for devices and partitions.

Answer / wizard_mcs@yahoo.co.in

vmstat will tell about the status of the virtual memory like
the memory swapped in, memory swapped out, memory used by
cpu etc.

netstat will give about the statistics of the network
connections which is connected to the host.

Answer / bandi sreekanth

statistics of virtual memory -vmstat

statistics of input/output and cpu -iostat

statistics of network statisticks - netstat

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