Sunday, March 7, 2010

Nmon on ubuntu 9.10

My favourite operating system is linux. At home I use ubuntu 9.10. A colleague of mine introduced me to a monitoring tool that can monitor almost anything! It is called nmon and it is provided by ibm as open source for linux. The latest binaries are for ubuntu 8.10 which do not work, so I had to compile from the source. I run onto a couple of problems and since I could not find anywhere a complete walkthrough for installing nmon in ubuntu, I decided to write one!

What we are going to need is g++, ncurses and nmon. What we are going to do is install g++, download ncurses, compile them and install them, and lastly we are going to compile nmon.

1) Open a terminal and run :
sudo apt-get install g++
2) download latest ncurses release (the moment this was written the ncurses-5.7.tar.gz was the latest) from and save it in a directory. For this example it will be inside /downloads
3) open a terminal and cd to the directory :
cd /downloads
4) Unzip and then untar the ncurses
gunzip ncurses-5.7.tar.gz
tar -xvf ncurses-5.7.tar
5) cd to the ncurses directory
cd ncurses-5.7
6) run configure and make
7) install as root
sudo make install
8) browse for nmon source code at
9) save lmon13d.c (or the latest source code) and makefile in /downloads
10) rename lmon13d.c to lmon.c
mv lmon13d.c lmon.c
11) make
make nmon_x86_ubuntu810
12) rename nmon_x86_ubuntu810
mv nmon_x86_ubuntu810 nmon
13) copy nmon to /usr/bin in order to be available in the path (or any other directory in the $PATH variable).

That is all. nmon is a rather complete tool for monitoring a linux system.
I hope you like it.


  1. Hi,thanks for your post, I had problems with getting nmon to work and it works now :-) But I think that in 10) you need to rename to lmon (and not nmon) to get it to work.

  2. You are correct my friend Jaarli. Thanks for pointing it out. I have already corrected step 10. cheers.