云计算教程学习路线视频源码课件：shell脚本实现获取图片_千峰云计算讲义

在云计算蓬勃发展的今天，与其在家闲着，不如立即开始学习，下面千锋给大家讲解一下：shell脚本实现获取图片。

#!/usr/bin/bash

. /etc/init.d/functions

function check(){

time=date "+%F %X"

echo “当前时间：$time”

ip=$(ip a |grep inet |grep “scope global dynamic”|awk -F"/" ‘{print $1}’ |awk ‘{print $2}’)

ping -w1 -c1 www.baidu.com &>/dev/null

if [[ $? -ne 0 ]];then

echo_failure || echo “网络异常，请检查”

else

echo_success && echo “网络正常 当前IP:$ip”

fi

yum repolist &>/dev/null

if [[ $? -ne 0 ]];then

echo_failure || echo “yum异常，请检查”

fi

}

function down(){

yum install -y wget &>/dev/null

w=echo "$1" |tr -d '\n' |od -An -tx1|tr ' ' %

data=KaTeX parse error: Expected 'EOF', got '&' at position 61: …x?tn=baiduimage&̲word=w")

echo $data | grep -P -o “https://ss.*?.jpg” | sort -n -r |uniq >> $2/url2.txt

a=0

while read line

do

sleep 1

code= ( c u r