apache 的问题

wallace888

我想作一个人网页空间！IP地址是192.168.1.1
useradd a
passwd a
cd /home
cd a
mkdir public_html
cd public_html
echo "bbs" > index.html
chmod -R 755 a

现在情况是输入http://192.168.1.1/~a/ 出错以下是出错信息 ，请高手请教！！

Object not found!
The requested URL was not found on this server. If you entered the URL manually please check your spelling and try again.
If you think this is a server error, please contact the webmaster
Error 404
192.168.1.33
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Apache/2.0.40 (Red Hat Linux)