CentOS / RHEL: Check If A Service Is Running Or Not

How do I find out if a service such as MySQL or Apache running on my Centos/RHEL/Fedora Linux server? You need to use service command. It runs a System V init script in as predictable…

CentOS / RHEL: Install iftop To Display Bandwidth Usage Per interface By Host

I am running Red Hat Enterprise Linux on IBM based system. How do I display bandwidth usage on an interface by host in real time using command line option? How do I monitor bandwidth usage…

Linux: Keep An Eye On Your System With Glances Monitor

I s there is a tool that can provide me a maximum of information (such as cpu, disk I/O, network, nfsd, memory and more) about my Linux/Unix server in a minimum of space in a…

Linux / Unix logtop: Realtime Log Line Rate Analyser

H ow can I analyze line rate taking log file as input on a Linux system? How do I find the IP flooding my Apache/Nginx/Lighttpd web-server on a Debian or Ubuntu Linux?   You need…

FreeBSD Unix Find Out Which Programs Are Listening On a Given Port Number

I ‘m a new FreeBSD Unix system user. How can I find out the process/programs names listing on a certain port on a FreeBSD Unix systems using command line? How do I lookup the process…

How to install and use Monit on Ubuntu/Debian Linux server as process supervision tool

H ow do I install and configure monit to restart services such as Nginx/Apache/OpenVPN server when failed on Debian or Ubuntu Linux?   Monit is a free and open source software that acts as process…