Commands to install iftop on Centos:

Pre-req install of libraries:

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yum -y install libpcap libpcap-devel ncurses ncurses-devel
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Download and Install iftop:

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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
make
make install
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To make use of iftop run the command:
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iftop
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iftop

Written by Matt Cooper
Hi, I'm Matt Cooper. I started this blog to pretty much act as a brain dump area for things I learn from day to day. You can contact me at: matt@matthewc424.sg-host.com.