![]() Updated plot() function with arguments for specification of plot options (in any order after the third argument).Variable spacing of x values in plot (unless step size is used).Option to plot real and imaginary parts separately (enabled by default).The command to install EPEL repo on your system is mentioned below. Packages for some of the commands mentioned here are available for EPEL repository. # yum install slurm -yĪfter installing ‘slurm’ start using it by running command and interface, example: $ slurm -s -i eth0 Simple in features, slurm does not display any further details about the network load. It supports 3 different styles of graphs each of which can be activated using the c, s and l keys. Slurm is ‘yet’ another network load monitor that shows device statistics along with an ascii graph. CentOS users need to setup repoforge, since its not available in EPEL. The output also consists of a graph and a section with packet level details. # yum install netdiagĪfter installing ‘netdiag’ start using it by entering in console the following command: #Ĭommand ‘bmon’ (Bandwidth Monitor) is a tool similar to ‘nload’ that shows the traffic load over all the network interfaces on the system. You need to install a netdiag package to get all these commands. Netdiag is a collection of network diagnostics tools and commands (netwatch, trafshow, netload commands) are all part of it. # yum install iptraf-ngĪfter installing ‘iptraf’ start using it by entering in console the following command: # iptraf This produces a list with all hosts and traffic counters. Utility ‘iptraf’ provides a colorful and interactive list of traffic going -in and -out (IP LAN monitor). # yum install nloadĪfter installing ‘nload’ start using it by running the following command: # nloadĬommand ‘iptraf’ is a very useful network monitoring tool. Easy and simple to use, and does not support many options. ![]() It also draws out a graph to indicate the same, the scale of which can be adjusted. ![]() Instead of ‘iftop’ and ‘tcptrack’ it produces a graph statistics and indicates the incoming as well as outgoing traffic. # yum install tcptrackĪfter installing ‘tcptrack’ start using it and get the network stats by running the following command: # tcptrackĬommand ‘nload’ is used to get information regarding incoming and outgoing traffic of the server. It also supports the standard ‘pcap’ filters that can be used to monitor specific connections. # yum install iftopĪfter installing ‘iftop’ you may start monitoring simply enter: # iftopĬommand ‘tcptrack’ is very close to ‘iftop’ command, it captures packets and calculate network bandwidth for each tcp connection. ‘iftop’ uses the ‘pcap’ library to capture the packets moving in and out of the network adapter, and then sums up the size and count to find the total bandwidth under use. ‘iftop’ measures the data flowing through individual socket connections, and it works in a manner that is different from other utilities. It helps us measure the total data moving -in and -out in connections. iftopĬommand iftop provides a real time monitoring of network bandwidth besides your server. Some of the tools like nload read the ‘/proc/net/dev’ file to get traffic stats, whereas some tools use the ‘pcap’ library to capture all packets and then calculate the total size to estimate the traffic load. The tools have different mechanisms of generating the traffic report. Below we will discuss top commands to monitor CentOS. They should know how to maintain their VPS systems, dedicated servers to avoid any issues. Monitoring of your CentOS installation is one of key tasks for every system administrator.
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