What do you think?
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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export PORT=11211; ss -an4 | sed -n '/ESTAB.*:'$PORT' .*:/{s/.* \([^:]\+\):.*:.*/\1/p}' | sort | uniq -c | sort -nrIt consists of three parts. A search:'/ESTAB.*:'$PORT' .*:/A replace:s/.* \([^:]\+\):.*:.*/\1/and printsed -n ... pexport PORT=11211; ss -an4 | grep -E "ESTAB.*$PORT" | awk '{print $5}' | awk -F: '{print $1}' | sort | uniq -c | sort -nr34 10.1.1.184 33 10.1.1.187 33 10.1.1.181 32 10.1.1.178 31 10.1.1.183 30 10.1.1.199 29 10.1.1.179 28 10.1.1.182 27 10.1.1.185 26 10.1.1.186 4 10.1.1.189export PORT=11211; ss -an4 | sed -n '/ESTAB.*:'$PORT' .*:/{s/.* \([^:]\+\):.*:.*/\1/p}' | sort | uniq -c | sort -nr256 10.1.1.190PORT=22 ; ss -n4 -o state established "( dport = :$PORT or sport = :$PORT )" | awk -F ':| +' '$1 ~ /[0-9]+/ {print $5}' | sort | uniq -c | sort -nrI also noticed that when I had PORT=22 the 'grep -E "ESTAB.*$PORT"' also matched port 8022. It should probably at least be changed to:grep -E "ESTAB.*:$PORT "I also tried with lsof, but that was much slower:PORT=ssh ; lsof -itcp:$PORT -stcp:established -n |awk -F '>|:| +' '$2 ~ /[0-9]+/ {print $11}' | sort | uniq -c | sort -rn