1NETHOGS(8)                  System Manager's Manual                 NETHOGS(8)
2
3
4

NAME

6       nethogs - Net top tool grouping bandwidth per process
7

SYNOPSIS

9       nethogs [-h] [-V] [-d] [-v] [-t] [-c] [-p] [-a] [-s] [-l] [device(s)]
10

DESCRIPTION

12       NetHogs is a small 'net top' tool. Instead of breaking the traffic down
13       per protocol or per subnet, like most such tools do,  it  groups  band‐
14       width  by  process - and does not rely on a special kernel module to be
15       loaded. So if there's suddenly a lot of network traffic, you  can  fire
16       up  NetHogs  and immediately see which PID is causing this, and if it's
17       some kind of spinning process, kill it.
18
19
20   Options
21       -h     display available commands usage
22
23       -V     print version info
24
25       -d     delay for refresh rate
26
27       -v     select view mode
28
29       -p     sniff in promiscuous mode (not recommended)
30
31       -a     monitor all devices, even loopback/stopped ones
32
33       -t     tracemode
34
35       -c     limit number of refreshes
36
37       -s     sort by traffic sent
38
39       -l     display command line
40
41       device(s) to monitor. By default eth0 is being used
42
43

INTERACTIVE CONTROL

45       m      cycle between display modes (KB/s, KB, B, MB, MB/s, GB/s)
46
47       l      display command line
48
49       r      sort by 'received'
50
51       s      sort by 'sent'
52
53       q      quit
54
55

RUNNING WITHOUT ROOT

57       In order  to  be  run  by  an  unprivileged  user,  nethogs  needs  the
58       cap_net_admin  and  cap_net_raw  capabilities.  These can be set on the
59       executable by using the setcap(8) command, as follows:
60
61           sudo setcap "cap_net_admin,cap_net_raw+pe" /usr/local/sbin/nethogs
62
63

SEE ALSO

65       netstat(8) tcpdump(1) pcap(3)
66

AUTHOR

68       Written by Arnout Engelen <arnouten@bzzt.net>.
69
70
71
72                               14 February 2004                     NETHOGS(8)