user3299633 user3299633 - 3 months ago 23
Linux Question

Trouble with cut command after executing ss command

Here is the basic cut syntax I'm using:

[jay@webserver ~]$ ss -tn
State Recv-Q Send-Q Local Address:Port Peer Address:Port
ESTAB 0 52 xxx.xx.xx.xx:xx xxx.xx.xx.xx:xx
ESTAB 0 232 xxx.xx.xx.xx:xx xxx.xx.xx.xx:xx


But when I try to cut on the fields, I don't get the appropriate output:

[jay@webserver ~]$ ss -tn | grep -v State | cut -d$'\t' -f3,4
ESTAB 0 36 xxx.xx.xx.xx:xx xxx.xx.xx.xx:xx
ESTAB 0 68 xxx.xx.xx.xx:xx xxx.xx.xx.xx:xx


The only thing I can think of is that the delimter isn't a tab but in that case how could I get the output I'm wanting?

Answer

ss's output is separated by spaces. I suggest to use awk:

ss -tn | grep -v State | awk '{print $3,$4}'
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