iftop编译安装

1、下载iftop

wget http://www.ex-parrot.com/pdw/iftop/download/iftop-0.17.tar.gz

tar zxvf iftop-0.17.tar.gz

cd iftop-0.17

./configure

提示： configure: error: can’t find pcap.h You’re not going to get very far without libpcap. 需要先安装libpcap

2、安装libpcap

wget http://www.tcpdump.org/release/libpcap-1.5.3.tar.gz

tar -xzvf libpcap-1.5.3.tar.gz

cd libpcap-1.5.3/

./configure

提示：“Your operating system’s lex is insufficient to compile libpcap. flex is a lex replacement that has many advantages, including being able to compile libpcap. “ 系统中未安装flex，需要先安装

yum -y install flex

再次运行./configure命令，生成相应的Makefile文件，运行make报错：“yacc -d grammar.y make: yacc: Command not found make: *** [grammar.c] Error 127"

yum -y install byacc

重新运行 ./configure

make && make install #完成libpcap安装

3、重新编译iftop配置

cd iftop-0.17

./configure

提示：checking for a curses library containing mvchgat… none found configure: error: Curses! Foiled again! (Can’t find a curses library supporting mvchgat.) Consider installing ncurses. 找不到支持 mvchgat 的 curses 库，安装 ncurses。

yum -y install ncurses

yum -y install ncurses-devel

确保ncurses和ncurses-devel都装上

make && make install

安装完iftop工具后，直接输入iftop命令即可显示网卡实时流量信息

iftop详解：https://baijiahao.baidu.com/s?id=1694894374565529986&wfr=spider&for=pc