我已經使用以下命令卸載了 apache2：
sudo service apache2 stop
sudo apt-get purge apache2 apache2-utils apache2.2-bin apache2-common
sudo apt-get autoremove --purge
我發現這個命令還剩下什麼：
whereis apache2
然後刪除所有這些檔案和目錄。
現在，當我嘗試安裝 apache2 並運行它時，出現錯誤：
sudo apt install apache2
sudo systemctl start apache2
Job for apache2.service failed because the control process exited with error code.
See "systemctl status apache2.service" and "journalctl -xe" for details.
sudo systemctl status apache2.service
● apache2.service - The Apache HTTP Server
Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sun 2021-10-03 10:34:31 UTC; 2min 38s ago
Docs: https://httpd.apache.org/docs/2.4/
Process: 12449 ExecStart=/usr/sbin/apachectl start (code=exited, status=203/EXEC)
Oct 03 10:34:31 machina systemd[1]: Starting The Apache HTTP Server...
Oct 03 10:34:31 machina systemd[12449]: apache2.service: Failed to execute command: No such file or directory
Oct 03 10:34:31 machina systemd[12449]: apache2.service: Failed at step EXEC spawning /usr/sbin/apachectl: No such file or directory
Oct 03 10:34:31 machina systemd[1]: apache2.service: Control process exited, code=exited, status=203/EXEC
Oct 03 10:34:31 machina systemd[1]: apache2.service: Failed with result 'exit-code'.
Oct 03 10:34:31 machina systemd[1]: Failed to start The Apache HTTP Server.
apache2 -v
Server version: Apache/2.4.41 (Ubuntu)
Server built: 2021-09-28T11:00:45
apache2ctl -S
Command 'apache2ctl' not found, but can be installed with:
apt install apache2
Please ask your administrator.
然後我這樣做：
sudo apt install apache2
但我得到同樣的錯誤。
嘗試過這個：
sudo apt-get --reinstall install apache2-bin
同樣的錯誤。
答案1
這就是我解決這個問題的方法。
首先，您需要停止 Apache2 服務並將其完全卸載：
sudo service apache2 stop
sudo apt-get purge apache2 apache2-utils apache2.2-bin apache2-common
sudo apt-get autoremove --purge
在那之後重新啟動你的機器然後再次安裝 Apache2：
sudo apt install apache2