Monitoring

Find Sound card details in Linux/Unix

Sound card is a hardware device which will give a machine the capability to play audio files and audio in video file for us. In this post we will see how to get sound card hardware and sound card driver details. We already covered following stuff in this "Know your hardware in Linux" series. Get(…)

Check if a machine runs on 64 bit or 32 bit Processor/Linux OS?

Q. How can I check if my server is running on a 64 bit processor and running 64 bit OS or 32 bit operating system? Before answering above question we have to understand below points. We can run a 32-bit Operating system on a 64 bit processor/system. We can run a 64-bit operating system on(…)

How to find RAM utilization by user in Linux

Recently we need to find RAM(aka Physical memory) used by a User.. I thought its bit easy to find RAM usage by using a group of commands and chaining them to get desired output. Let me explain what I did to get RAM usage of a user and came to know its blunder mistake to(…)

DIG command explained with examples in Linux

In this post I am going to teach How to use DIG and with examples. DIG is one of the most important tool in debugging DNS server related issues. Some points to be noted about DIG. 1.DIG full-form/abbreviation is Domain Information Groper 2.DIG can work on command line or as well in batch mode 3.DIG supports(…)

11 Basic Linux NMAP command Examples for System administrators

Learn nmap with examples NMAP(Network Mapping) is one of the important network monitoring tool. Which checks for what ports are opened on a machine. Some important to note about NMAP NMAP abbreviation is network mapper NMAP is used to scan ports on a machine, either local or remote machine (just you require IP/hostname to scan).(…)

How To Log DNS Server Activity?

How to log DNS server activity? Ans : Sometimes you require to log DNS server activity to a file for future reference for analyse the activity on DNS server and whether DNS server is properly resolving accurately or not. rndc(remote name daemon control) is the command to use for DNS server activity logging. Let’s have(…)

How To Use VNSTAT To Monitor Bandwidth Usage.

There are so many tools to monitor network such as MRTG, now I am going to explain such tool which monitors bandwidth for a system, ie vnstat(view network statistics). Its very much easy to install and configure. This tool can give you full details about how much bandwidth used on the basics of, Per month.(…)

Network monitoring/info gathering tools in linux

NETWORK MONITORING/ INFO GATHERING TOOLS IN LINUX.1.Why we have to monitor Network ?Some times we have to monitor Network traffic in our LAN if there is any traffic issues such as “Broadcast Stroms”. Here I am going to explain some Linux tools which are used to monitor network traffic. I used to struggle a lot(…)

N.A.G.I.O.S

N.A.G.I.O.S NAGIOS(N.A.G.I.O.S. is a recursive acronym: “Nagios Ain’t Gonna Insist On Sainthood“, “Sainthood” being a reference to the original name of the software, which was changed in response to a legal challenge by owners of a similar trademark). –wikipedia.org NAGIOS is a system and network monitoring application that watches host and services that we specify(…)

Linux User info gathering commands

MONITORING USERS User-management is always one of the basic tasks for Linux administrators, here we are going to see some basics user related “Monitoring Commands”. 1) “finger” is a command which will give full details about user properties such as name, login, shell what he is using etc. Syntax: #finger username Example: [root@localhost ~]# finger(…)