nload是一个很小巧的工具，用来监控当前系统的网速
安装
代码语言：javascript复制wget http://www.roland-riegel.de/nload/nload-0.7.4.tar.gz
tar -xf nload-0.7.4.tar.gz
cd nload-0.7.4
./configure
make && make install使用
查看帮助
代码语言：javascript复制nload -h
Options:
-a period Sets the length in seconds of the time window for average
calculation.
平均计算时间长度
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.
指定入口流量最大值 单位是kBit/s
Default is 10240.
-m Show multiple devices at a time; no traffic graphs.
同时显示多个设备统计信息
-o max_scaling Same as -i but for the graph indicating the outgoing bandwidth
usage.
和-i相同，但是是出口流量
Default is 10240.
-t interval Determines the refresh interval of the display in milliseconds.
刷新间隔
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.
显示单位
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.
和-u相同，但是为总流量
devices Network devices to use.
指定网卡
Default is to use all auto-detected devices.
--help
-h Print this help.
example: nload -t 200 -i 1024 -o 128 -U M
The options above can also be changed at run time by pressing the 'F2' key.
运行时使用F2可以查看此页图形查看
代码语言：javascript复制nload -t 200 -i 1024 -o 128 -U M
# 左右键可以在多个网卡之间切换网卡流量
代码语言：javascript复制nload eth0
nload -m
