shell 死循环 endless loop

 

1:

#!/bin/bash
for ((;;));do
    echo 'endless loop'
    sleep 2
done

 

2:

#!/bin/env sh

while true;do
    echo 'endless loop'
    sleep 2
done

 

 

3:

#!/bin/env bash

until false;do
    echo 'endless loop'
    sleep 2
done