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

Question

It would be something similar to top, where you see your cpu processes in real time. I'm not looking for a GUI like Wireshark to do it.

score 54 · Accepted Answer · answered Nov 04 '12 at 18:13

54

iftop is cool and lightweight.

iftop_ui

ntop is even cooler but web-based and uses a daemon.

answered Nov 04 '12 at 18:13

petrus

score 21 · Answer 2 · edited Nov 05 '12 at 05:21

21

IPTraf is another common real-time bandwidth monitor on Linux IPTraf-ng is a updated fork of IPTraf with ipv6 support

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edited Nov 05 '12 at 05:21

R. S.

answered Nov 04 '12 at 19:19

kernelpanic

2

Unfortunately, last I checked, iptraf doesn't support display of IPv6 connections. – Jeremy Visser Nov 04 '12 at 21:22

score 10 · Answer 3 · answered Nov 04 '12 at 19:18

10

nethogs, in case you need traffic analys per application - darkstat also works (web frontend)

answered Nov 04 '12 at 19:18

mojo

score 8 · Answer 4 · answered Nov 05 '12 at 14:51

Those give all detailed info in a ui-style. If you are looking for a much simplier one use:

vnstat -l

You'll get something like (realtime updates):

[user@host ~]$ vnstat -l

Monitoring em1...    (press CTRL-C to stop)

   rx:        4 kbit/s     5 p/s          tx:        4 kbit/s     3 p/s

The same command can be used to get daily/monthly/etc traffic reports.

score 7 · Answer 5 · answered Nov 04 '12 at 23:46

7

Two small utilities that do this are tcptrack and jnettop

tcptrack

jnettop

answered Nov 04 '12 at 23:46

dlu

5 Answers5