我通过运行安装了 apache2 sudo apt-get install apache2，但似乎出现了错误。下面是输出。为什么？
me@mycomputer:/usr/share/apache2$ sudo apt-get install apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
apache2 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 36 not upgraded.
me@mycomputer:/usr/share/apache2$ sudo dpkg --listfiles apache2
/.
/usr
/usr/share
/usr/share/bug
/usr/share/bug/apache2
/usr/share/bug/apache2/control
/usr/share/doc
/usr/share/bug/apache2/script
/usr/share/doc/apache2
更新
运行sudo apt-get install --reinstall apache2，输出为：
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
dovecot-core libdbd-sqlite3-perl dovecot-imapd dnsmasq
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 36 not upgraded.
Need to get 0 B/1,498 B of archives.
After this operation, 0 B of additional disk space will be used.
sh: 0: getcwd() failed: No such file or directory
sh: 0: getcwd() failed: No such file or directory
sh: 0: getcwd() failed: No such file or directory
(Reading database ... 194506 files and directories currently installed.)
Preparing to replace apache2 2.2.22-1ubuntu1.10 (using .../apache2_2.2.22-1ubuntu1.10_amd64.deb) ...
Unpacking replacement apache2 ...
Setting up apache2 (2.2.22-1ubuntu1.10) ...
运行sudo service apache2 status，输出为：
sh: 0: getcwd() failed: No such file or directory
Apache2 is running (pid 22408).
看起来 apache2 正在运行，但是如何列出 apache2 的内容？另外，/etc/apache2 中有文件：
/etc/apache2$ ls
apache2.conf envvars magic mods-enabled sites-available
conf.d httpd.conf mods-available ports.conf sites-enabled
为什么我不能列出全部？
更新
不知道为什么被否决了???也许这个问题太简单了，不适合在这里发布???
答案1
你看到的是12.04 正常， 在哪儿元包。实际的apache2二进制文件、模块等是apache2-mpm-*，apache2-bin和apache2-common软件包。在较新版本的 Ubuntu 中，apache2软件包还提供配置文件。