Monitoring Tools In Linux / Ubuntu

Some of monitoring tools in linux / ubuntu.

Some of linux command which can be used as monitoring memory and cpu usage disk and network monitoring etc.

1. Top

This command used to check cpu and memory utilization process wise.

Open a terminal and execute:

top

2. Htop

Htop command is well refine and have extra feature of top command.it have very good looking use interface.

Open a terminal and execute:

sudo apt-get install htop

htop

Here are some shortcuts to configure htop output interactively.
M: Sort processes by memory usage
P: Sort processes by processor usage
?: Access help
k: Kill current/tagged process
F2: Setup htop. You can choose display options here.
/: Search processes

Also use man command for help

3. Atop

Atop shows the current usage levels of cpu, memory, disk and network along with a list of processes sorted by cpu usage in descending order.

sudo apt-get install atop

atop

4. Nmon

Nmon is used to monitor cpu, memory, network, disk usage and process list on a single screen. We can generate spreadsheet file form this report.

sudo apt-get install nmon

nmon

5. Glances

Glances is similar to Nmon that report statistics on cpu, memory, network, disk and processes.
Glances gives a quick overview of system usage on Linux

At the moment, packages exist for the following distributions

Arch Linux
Debian (Testing/Sid)
Fedora/CentOS/RHEL
Gentoo
Ubuntu (13.04+)
Void Linux

So you should be able to install it using your favorite package manager.
Install glances on Ubuntu or Debian

sudo apt-get install glances

Install glances on Fedora or CentOS

sudo yum install glances

CentOS users need to first setup the epel repository and then install using yum as shown above.
Or install it from Python Package Index repository.

# fedora/centos

sudo yum install python-pip

sudo pip install glances

Using glances
Once installed, start using it right away. Just type in the name and hit enter.
glances

The user interface is interactive and you can gear it with keyboard shortcuts. Here is a list

The output is color highlighted. Green indicates optimum levels of usage whereas red indicates that the particular resource is under heavy use.

6. Saidar

Saidar is the simplest of all tools. The output includes statistics on CPU, processes, load, memory, swap, network I/O, disk I/O, and file system information. The output does not mention the running processes at all.

Install saidar on ubuntu/fedora/centos

Ubuntu/Debian

sudo apt-get install saidar

Fedora/CentOS

sudo apt-get install statgrab-tools

Using Saidar

Launch saidar by simply typing the name.

saidar