--> netstat -ap | grep "LISTEN" | grep -v LISTENING | awk '{print $4}' | cut -c 3-9 | grep [0-9] | \
awk '{print "grep "$1" /etc/services"}'  | tee -a ckports.sh ;  echo "grep 590[0-9] /etc/services" >> ckports.sh ; \
sh ./ckports.sh | grep -v ^ni | grep -v ^ta

(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
grep 42974 /etc/services
grep 5801 /etc/services
grep 5802 /etc/services
grep 5803 /etc/services
grep 5901 /etc/services
grep 5902 /etc/services
grep 5903 /etc/services
grep 39309 /etc/services
ntp                123/tcp      # Network Time Protocol  [Dave_Mills] [RFC5905]
ntp                123/udp      # Network Time Protocol  [Dave_Mills] [RFC5905]
rfb                5900/tcp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
rfb                5900/udp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
ntp                123/tcp      # Network Time Protocol  [Dave_Mills] [RFC5905]
ntp                123/udp      # Network Time Protocol  [Dave_Mills] [RFC5905]
#                  4190/udp     Reserved  [RFC5804]
rfb                5900/tcp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
rfb                5900/udp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
ntp                123/tcp      # Network Time Protocol  [Dave_Mills] [RFC5905]
ntp                123/udp      # Network Time Protocol  [Dave_Mills] [RFC5905]
rfb                5900/tcp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
rfb                5900/udp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
ntp                123/tcp      # Network Time Protocol  [Dave_Mills] [RFC5905]
ntp                123/udp      # Network Time Protocol  [Dave_Mills] [RFC5905]
rfb                5900/tcp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
rfb                5900/udp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
ntp                123/tcp      # Network Time Protocol  [Dave_Mills] [RFC5905]
ntp                123/udp      # Network Time Protocol  [Dave_Mills] [RFC5905]
rfb                5900/tcp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
rfb                5900/udp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
ntp                123/tcp      # Network Time Protocol  [Dave_Mills] [RFC5905]
ntp                123/udp      # Network Time Protocol  [Dave_Mills] [RFC5905]
rfb                5900/tcp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
rfb                5900/udp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
ntp                123/tcp      # Network Time Protocol  [Dave_Mills] [RFC5905]
ntp                123/udp      # Network Time Protocol  [Dave_Mills] [RFC5905]
rfb                5900/tcp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]
rfb                5900/udp     vnc-server # Remote Framebuffer [Tristan_Richardson] [RFC6143]