不小心误删了 apache.conf ，然后重装apache2后遇到安装后无法启动的错误信息 Apr 09 23:07:03 u02 systemd[1]: Starting LSB: Apache2 web server… Apr 09 23:07:03 u02 apache2[29736]: /etc/init.d/apache2: 46: .: Can’t open /etc/apache2/envvars Apr 09 23:07:03 u02 apache2[29736]: /etc/init.d/apache2: 5