linux网络流量实时监控工具之nload

llinux下的网络流量监控软体是很多的,如SNOP等,这里介绍的是另一款在linux下的实时地监控网卡的流量软件:nload。
nload分Incoming,Outgoing两部分,也就是流入与流出的流量
同时统计当前,平均,最小,最大,总流量的值,使人看了一目了然,如下图

官网及下载 http://www.roland-riegel.de/nload/index.html
http://www.roland-riegel.de/nload/nload-0.7.2.tar.gz
http://dl.wdlinux.cn:5180/soft/nload-0.7.2.tar.gz
安装
wget http://www.roland-riegel.de/nload/nload-0.7.2.tar.gz
tar zxvf nload-0.7.2.tar.gz
cd nload-0.7.2
./configure;make;make install
使用
直接用nload回车即可,也可以指定网卡,如nload eth1
还可以指定是以K或M来显示流量,如nload -u M显示的流量是以MB为单位的
看看还有哪些参数或选项
[root@wdlinux ~]# nload -h
nload version 0.7.2
Copyright (C) 2001 – 2008 by Roland Riegel
nload comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
welcome to redistribute it under certain conditions. For more details see the
GNU General Public License Version 2 (http://www.gnu.org/copyleft/gpl.html).
Command line syntax:
nload [options] [devices]
nload –help|-h
Options:
-a period Sets the length in seconds of the time window for average
calculation.
Default is 300.
-i max_scaling Specifies the 100% mark in kBit/s of the graph indicating the
incoming bandwidth usage. Ignored if max_scaling is 0 or the
switch -m is given.
Default is 10240.
-m Show multiple devices at a time; no traffic graphs.
-o max_scaling Same as -i but for the graph indicating the outgoing bandwidth
usage.
Default is 10240.
-t interval Determines the refresh interval of the display in milliseconds.
Default is 500.
-u h|b|k|m|g Sets the type of unit used for the display of traffic numbers.
H|B|K|M|G h: auto, b: Bit/s, k: kBit/s, m: MBit/s etc.
H: auto, B: Byte/s, K: kByte/s, M: MByte/s etc.
Default is h.
-U h|b|k|m|g Same as -u, but for a total amount of data (without “/s”).
H|B|K|M|G Default is H.
devices Network devices to use.
Default is to use all auto-detected devices.
–help
-h Print this help.
example: nload -t 200 -i 1024 -o 128 -U M
FAQ
如安装时提示下面的问题
configure: error: ncurses library or development files not found. ncurses is required for nload.
make: *** No targets specified and no makefile found. Stop.
make: *** No rule to make target `install’. Stop.
用 yum install -y ncurses-devel 即可解决

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