bash脚本-----在耗时任务中显示旋转器动画

1、 

#!/bin/bash

sleep 5 &
pid=$!
frames="/ | \\ -"
while kill -0 $pid 2&>1 > /dev/null;
do
    for frame in $frames;
    do
        printf "\r$frame Loading..."
        sleep 0.5
    done
done
printf "\n"

 将上面的sleep 5 &替换成耗时任务函数。

 2、耗时任务在task函数中执行，检测耗时任务，并在终端打印

#!/bin/bash

function task1() {
    echo "Running task1..."
    sleep 5
}
task1 &
pid=$!
frames="/ | \\ -"
while kill -0 $pid &> /dev/null;
do
    for frame in $frames;
    do
        printf "\r$frame Loading..."
        sleep 0.5
    done
done
printf "\n"