监控工具

1.iftop

iftop指导

2.nload

yum install nload
### 源码编译安装
yum install ncurses-devel # provides an API for developers to create text-based user interfaces in a terminal-independent manner
wget http://www.roland-riegel.de/nload/nload-0.7.4.tar.gz
tar zxf nload-0.7.4.tar.gz
./configure --build=arm-linux
make -j
make install