Find ports of an application — Check on which port program is listening

In my previous post I was discussing how busy port created an issue while i was trying to start apache web server. Later i learned how to know which program or application is using which port.

1. Windows Machine:

Run following command on command line:

C:\> netstat -anb

-a Show all

-b Show application

-n Show numerical port number

Learn more by viewing the help:

C:\> netstat --help



2. Linux Machine:

Run following command on command line:

# netstat -pan

-a Show all

-p Show program

-n Show numerical port number

Learn more by viewing the help:

# man netstat


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