linux - shell 脚本 - 如何进行多次读取？

Question

我无法给出太多解释，因为我的英语很糟糕。我想要做的示例如下；

尝试.sh

#!/bin/sh
echo -n "Enter the port:"
read ports
if [ ! -d "$ports" ]; then

mkdir -p /root/port$ports
echo "The folder was created for $ports"
wget -q www.example.com/example.tar.bz2
tar -xjf example.tar.bz2
su root -c "screen -A -m -d -S 'example$ports' ./example -RunningAsRootIsEvilAndIKnowThat"
echo "$ports started."
else
exit 0
fi

腻子；

root@ubuntu:~# sh try.sh
Enter the port: 4445, 4546
Created folder 'port4445'
Created folder 'port4546'
4445 started.
4546 started.

我该如何制作？

Answer 1

#!/bin/bash
IFS=, read -p "Enter the Hosts: " -ra hosts </dev/tty
IFS=, read -p "Enter the Port: " -ra ports </dev/tty

for host in "${hosts[@]}"; do
    for port in "${ports[@]}"; do
        nc -vz $host $port
    done
done

运行时:

bash try.sh
Enter the Port: 80
Enter the Hosts: 127.0.0.1
localhost [127.0.0.1] 80 (http) open

nc -vz $host $port 将检查 $host 是否正在监听 $port

IFS=, 分割输入，在我们的例子中使用 , 将其视为输入分隔符。

-p 显示消息。

-a 将输入放入数组