ss – anothre utility to investigate sockets.

ss is :

ss  is  used to dump socket statistics. It allows showing information similar to netstat.  It can display more TCP and state informationsthan other tools.

 

This comes in iproute package in Fedora. So, to install this you would need to install “iproute” if not installed already.

sudo yum install iproute

Now, once you have done that you can look at the man page to check what all you can see with ss. but here are some examples:

#list all sockets
ss -ant
ss -art

#List all listening sockets
ss -anl

# Show detailed information and memory for all listening sockets
ss -anlme

# Display all udp sockets
ss -u -a

 

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ss – utility to investigate sockets.

Sometimes, you find some interesting application/command by accident, and that is just what happened a few days back. Well, I was doing a ssh and as usual made my share of mistake in typing and missed the “h” from the ssh command and saw a list of options instead of my prompt on remote server.

Now, that set me thinking and fond that its a very interesting command that comes with iproute on Fedoara, so if you want this command, then install iproute like this

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 sudo yum install iproute

and then you can see the help with

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man ss

 

By default, without any options you will see a list of all open sockets on your system.

There are a lot of options that you can use and couple of them are very interesting a useful.

-m — shows the memory

p — process associated with the socket.

-i — shows the TCP internal information

There are some other options which you might find useful.

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