Shell script for monitoring

HariharanV · 09-16-2010, 12:59 AM

Hi All,

Am new for linux shell script,can any one guide me to monitoring the LISTENING IP's when using netstat -alnp commang.i need this as a shell script end it ll generated in one file.

Thanks,

Hariharan V.

Disillusionist · 09-16-2010, 01:15 AM

What have you tried so far?

I am a little confused about what you are trying to achieve.

Are you able to run the command netstat -alnp and identify which parts of the output are relevant for your request?

The following link provides an introduction to BASH script programming:
http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html

HariharanV · 09-16-2010, 02:12 AM

Hi,

natstat -alnp is working fine,i need to monitor particular port number.
what i want means? i wanna shell script for this......

Disillusionist · 10-04-2010, 09:10 AM

Hi Hariharan,

Sorry for the delay, I have just got back from Holiday.

Have you read the link in my previous post, this should have shown you how to write a basic shell script

Example:

Code:

#!/bin/bash
###
### Script to get information about a specific port
###  (passed as the first variable)
###
usage() {
   echo "check_port [port]"
   exit 1
}

### Check number of parameters passed
if [ $# -lt 1 ]
then
   usage
fi


PORT=$1

### Run netstat -alnp and grab the relevant details

Please provide samples of the output that you get from netstat -alnp and highlight the section that you are interested in checking.