How to get nginx running exact port on linux-CodePudding

If i execute the below comment, The result will be like this 8060 0.0.0.0

netstat -antup | grep nginx |awk '{print $4 "\t" $5 }' | cut -d ":" -f2

But I want the result to be like this 8060

CodePudding user response：

Not sure what the orignial response from the command is, but just cut the response again is one way

netstat -antup | grep nginx |awk '{print $4 "\t" $5 }' | cut -d ":" -f2 | cut -d " " -f1

CodePudding user response：

Deconstructing the command you provided, netstat -antup prints these information:

$ netstat -antup
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 127.0.0.1:8060         0.0.0.0:*               LISTEN      XYZ/nginx
...

You want just the "8060", which is the port, nginx is listening to.

The next part was fine. grep nginx |awk '{print $4}' gives you the corresponding Local Address. You don't need the "\t" $5 part, as the Foreign Address is not relevant here.

The intermediary result should look like this:

$ netstat -antup | grep nginx | awk '{print $4}'
127.0.0.1:8060

Now the port ist the last part after a ":". Be aware, that IPv6 addresses also contain ":"s. So i'd suggest to cut the very last one instead of the 2nd. You can do so, by reverting the output, cutting the first bit and reverting again:

$ netstat -antup | grep nginx | awk '{print $4}' | rev | cut -d":" -f1 | rev
8060

et voila. the desired output