演示 RSS 阅读器的 Shell 脚本
您可能知道 RSS 是 XML，它本身就是一种简单的标记语言。 XML 元素是标记设置的值。该标签包含任何以小写字母 - (<) 开头并以大于号 (>) 结尾的标点符号。标签是以下三种类型之一：
- 开始标签，标记开始值（如
- ）。
- 结束标签，标记值的结束 ()。
- “空项目”标签，其中可能包含值作为属性（
演示 RSS 阅读器的 Shell 脚本
给定一个 RSS XML 文件，任务是解析文件的内容
示例输入： https://www.feedforall.com/sample.xml
样本输出：
FeedForAll Sample Feed RSS Solutions for Restaurants <b>FeedForAll </b>helps Restaurant's communicate with customers. Let your customers know the latest specials or events.<br> Calendar of Events </i></font> RSS Solutions for Schools and Colleges FeedForAll helps Educational Institutions communicate with students about school wide activities, events, and schedules.<br> Lunches Menus </i></font> RSS Solutions for Computer Service Companies FeedForAll helps Computer Service Companies communicate with clients about cyber security and related issues. <br> Job Postings </i></font> RSS Solutions for Governments FeedForAll helps Governments communicate with the general public about positions on various issues, and keep the community aware of changes in important legislative issues. <b><i><br> Bulletins</i></font> RSS Solutions for Politicians FeedForAll helps Politicians communicate with the general public about positions on various issues, and keep the community notified of their schedule. <br> </i></font> RSS Solutions for Meteorologists FeedForAll helps Meteorologists communicate with the general public about storm warnings and weather alerts, in specific regions. Using RSS meteorologists are able to quickly disseminate urgent and life threatening weather warnings. <br> School Cancellations </i></font> RSS Solutions for Realtors & Real Estate Firms FeedForAll helps Realtors and Real Estate companies communicate with clients informing them of newly available properties, and open house announcements. RSS helps to reach a targeted audience and spread the word in an inexpensive, professional manner. <font color="#0000FF"><br> Mortgage Rates</i></font> RSS Solutions for Banks / Mortgage Companies FeedForAll helps <b>Banks, Credit Unions and Mortgage companies</b> communicate with the general public about rate changes in a prompt and professional manner. <br> Specials</i></font> RSS Solutions for Law Enforcement <b>FeedForAll</b> helps Law Enforcement Professionals communicate with the general public and other agencies in a prompt and efficient manner. Using RSS police are able to quickly disseminate urgent and life threatening information. <br> Meetings</i></font>
#!/bin/sh
# Akash 2022-02-13
# Url of the RSS feed RSS_URL=””
# Step 1 : Download RSS Feed
curl –silent “$RSS_URL” | \
# Step 2 : Only match lines with ‘title>’ or ‘description>’
grep -E ‘(title>|description>)’ | \
# Step 3 : Remove the first 3 lines tail -n +4 | \
#Other methods which use sed instead of tail
#sed -n ‘4,$p’ | \ #sed -e ‘1,3d’ | \
# Step 4 : Remove all leading whitespace from each line (spaces and tabs)
sed -e ‘s/^[ \t]*//’ | \
# Step 5 : Remove all title and description tags. ‘
sed -e ‘s/