Php htcaccess重写到子目录不起作用

当我再次问这个问题时，有些人可能会生气和恼怒，但在尝试了我在这里找到的所有答案后，我真的无法让它起作用，我也是这方面的新手。无论如何，我有一个域（www.testco.sample.com），我想重定向到一个子目录（/var/www/html/start/index.html），所以我修改了.htaccess并添加了以下几行

RewriteEngine on
RewriteRule ^$ start/index.html [L]

但是，重新启动apache时，它不使用重写规则。我甚至试过下面的代码，但都没有用

# .htaccess main domain to subdirectory redirect
# Do not change this line.
RewriteEngine on
# Change example.com to be your main domain.
RewriteCond %{HTTP_HOST} ^(www.)?example.com$
# Change 'subdirectory' to be the directory you will use for your main domain.
RewriteCond %{REQUEST_URI} !^/subdirectory/
# Don't change the following two lines.
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# Change 'subdirectory' to be the directory you will use for your main domain.
RewriteRule ^(.*)$ /subdirectory/$1
# Change example.com to be your main domain again.
# Change 'subdirectory' to be the directory you will use for your main domain
# followed by / then the main file for your site, index.php, index.html, etc.
RewriteCond %{HTTP_HOST} ^(www.)?example.com$
RewriteRule ^(/)?$ subdirectory/index.html [L] 

有人能解释一下怎么做吗

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谢谢。

使用

RewriteBase

# .htaccess main domain to subdirectory redirect
RewriteBase /foldername/
# Do not change this line.
RewriteEngine on
# Change example.com to be your main domain.
RewriteCond %{HTTP_HOST} ^(www.)?example.com$
# Change 'subdirectory' to be the directory you will use for your main domain.
RewriteCond %{REQUEST_URI} !^/subdirectory/
# Don't change the following two lines.
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# Change 'subdirectory' to be the directory you will use for your main domain.
RewriteRule ^(.*)$ /subdirectory/$1
# Change example.com to be your main domain again.
# Change 'subdirectory' to be the directory you will use for your main domain
# followed by / then the main file for your site, index.php, index.html, etc.
RewriteCond %{HTTP_HOST} ^(www.)?example.com$
RewriteRule ^(/)?$ subdirectory/index.html [L] 

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这很尴尬，但我的问题的解决方法非常简单，我不得不花4-6个小时搜索、排除故障，寻找答案（讽刺！）。解决我的问题的是一条直线

RedirectMatch ^/$ /start/index.html

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谢谢你们的帮助，伙计们

你允许虚拟主机覆盖吗？是的，我做了第一件事，我检查了。如果服务器是Ubuntu，有什么区别吗？也许我错过了什么。