shell exercises Question 25: to determine whether to open a web service

[1] How

Write a script to determine whether to open my linux server web services? Listening on port 80

[Core] Points

netstat -lntp | grip '80'

【script】

#!/bin/bash
n=`netstat -lntp | grep ':80' | wc -l`

if [ $n -eq 0 ]; then
    echo "It not listen port 80"
else
    ser=`netstat -lntp | grep ':80 ' | awk -F '/' '{print $NF}'`
    echo "It is listening port 80, and the server is $ser"
fi