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commandlinefu.com is the place to record those command-line gems that you return to again and again.

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Universal configuration monitoring and system of record for IT.
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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
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Monitoring TCP connections number

Terminal - Monitoring TCP connections number
watch "ss -nat | awk '"'{print $1}'"' | sort | uniq -c"
2012-12-07 19:07:33
User: ricardofunke
Functions: watch
-1
Monitoring TCP connections number

Monitoring TCP connections number showing each state. It uses ss instead of netstat because it's much faster with high trafic.

You can fgrep specific ports by piping right before awk:

watch "ss -nat | fgrep :80 | awk '"'{print $1}'"' | sort | uniq -c"

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
watch -n 1 "netstat -tpanl | grep ESTABLISHED"

Know a better way?

If you can do better, submit your command here.

What others think

I think you forgot an " at the end of the script

Comment by elcoclient 196 weeks and 4 days ago

You're right

Comment by ricardofunke 196 weeks and 4 days ago

Your point of view

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