问题描述
限时送ChatGPT账号..我编写了一个shell脚本来下载和安装tomcat服务器v (8.5.31).wget http://www.us.apache/dist/tomcat/tomcat-8/v8.5.31/bin/apache-tomcat-8.5.31.tar.gz 工作正常，但是一旦版本更改为 9.0.10，它就开始出现 404 not found 错误.那么我应该怎么做才能始终获得最新版本.
I have written a shell script to download and install the tomcat server v (8.5.31). wget http://www.us.apache/dist/tomcat/tomcat-8/v8.5.31/bin/apache-tomcat-8.5.31.tar.gz It was working fine, but as soon the version got changed to 9.0.10, it started giving error as 404 not found.
So what should I do to get the latest version always.
推荐答案
TL;DR
TOMCAT_VER=`curl --silent http://mirror.vorboss/apache/tomcat/tomcat-8/ | grep v8 | awk '{split($5,c,">v") ; split(c[2],d,"/") ; print d[1]}'`
wget -N http://mirror.vorboss/apache/tomcat/tomcat-8/v${TOMCAT_VER}/bin/apache-tomcat-${TOMCAT_VER}.tar.gz
我遇到了同样的挑战.但是，对于我的解决方案，我需要不断变化的最新 8.5.x Tomcat 版本.
I encountered the same challenge. However for my solution I require the latest 8.5.x Tomcat version which keeps changing.
由于下载Tomcat的URL保持不变，只是版本发生了变化，我发现以下解决方案适合我:
Since the URL to download Tomcat remains the same, with only the version changing, I found the following solution works for me:
TOMCAT_VER=`curl --silent http://mirror.vorboss/apache/tomcat/tomcat-8/ | grep v8 | awk '{split($5,c,">v") ; split(c[2],d,"/") ; print d[1]}'`
echo Tomcat version: $TOMCAT_VER
Tomcat version: 8.5.40
grep v8 - 返回具有所需版本的行:
grep v8 - returns the line with the desired version:
<img src="/icons/folder.gif" alt="[DIR]"> <a href="v8.5.40/">v8.5.40/</a> 2019-04-12 13:16 -
awk '{split($5,c,">v") ;split(c[2],d,"/");print d[1]}' - 提取我们想要的版本:
awk '{split($5,c,">v") ; split(c[2],d,"/") ; print d[1]}' - Extracts the version we want:
8.5.40
然后我继续使用提取的版本下载 Tomcat:
I then proceed to download Tomcat using the extracted version:
wget -N http://mirror.vorboss/apache/tomcat/tomcat-8/v${TOMCAT_VER}/bin/apache-tomcat-${TOMCAT_VER}.tar.gz
这是使用 curl、grep 和 awk 从中提取版本的完整 curl 响应:
This is the complete curl response from which the version is extracted using curl, grep and awk:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html>
<head>
<title>Index of /apache/tomcat/tomcat-8</title>
</head>
<body>
<h1>Index of /apache/tomcat/tomcat-8</h1>
<pre><img src="/icons/blank.gif" alt="Icon "> <a href="?C=N;O=D">Name</a> <a href="?C=M;O=A">Last modified</a> <a href="?C=S;O=A">Size</a> <a href="?C=D;O=A">Description</a><hr><img src="/icons/back.gif" alt="[PARENTDIR]"> <a href="/apache/tomcat/">Parent Directory</a> -
<img src="/icons/folder.gif" alt="[DIR]"> <a href="v8.5.40/">v8.5.40/</a> 2019-04-12 13:16 -
<hr></pre>
<address>Apache/2.4.25 (Debian) Server at mirror.vorboss Port 80</address>
</body></html>
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