Is it possible to display realtime network utilization without third part tools in Linux

Question

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Is there a linux terminal command that lets you see the amount of data coming in to your tcp connections in real time?

I want to able to display realtime (or near realtime) network utilization without third part tools in Linux, e.g.

102KB on interface eth0

is it possible?

What do you mean by "third party tools" exactly? – David Schwartz Nov 18 '12 at 08:33 — David Schwartz, Nov 18 '12 at 08:33

score 0 · Answer 1 · answered Nov 18 '12 at 10:22

0

There's iftop and iptraf to name but two.

"iftop does for network usage what top(1) does for CPU usage" -- http://www.ex-parrot.com/~pdw/iftop/

answered Nov 18 '12 at 10:22

Tom O'Connor

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score 0 · Answer 2 · edited Apr 13 '17 at 12:14

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According to your Description, you want vnstat.

Question has also been answered here

edited Apr 13 '17 at 12:14

Community

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answered Nov 18 '12 at 10:29

mojo

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score 0 · Answer 3 · answered Nov 18 '12 at 10:39

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There is also ifstat if all you want is total throughput.

answered Nov 18 '12 at 10:39

James Park-Watt

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score 0 · Accepted Answer · answered Nov 18 '12 at 12:03

On Ubuntu it is shown in ifconfig, where RX: Received, TX: Transmitted

ifconfig eth0

eth0  Link encap:Ethernet  HWaddr 00:21:23:e3:50:0c  
      inet addr:192.168.2.14  Bcast:192.168.2.255  Mask:255.255.255.0
      UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
      RX packets:4074454586 errors:0 dropped:0 overruns:0 frame:1
      TX packets:2709815673 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:2484134569 (2.4 GB)  TX bytes:978423284 (978.4 MB)
      Interrupt:41 Base address:0x7c00

To get just the usage, use grep:

ifconfig eth0 | grep 'RX bytes'

RX bytes:2484134569 (2.4 GB)  TX bytes:978423284 (978.4 MB)

To continuously monitor, use watch:

watch "ifconfig eth0 | grep 'RX bytes'"

Is it possible to display realtime network utilization without third part tools in Linux

4 Answers4