error while re-installing apache2 on ubuntu 14.04

Question

I remove apache from my machine following these steps:

sudo apt-get remove apache2*

sudo apt-get autoremove

sudo rm -Rf /etc/apache2

I was able to remove it successfully but when I tried to install it again I got this error:

/etc/init.d/apache2: 64: .: Can't open /etc/apache2/envvars /etc/init.d/apache2: 76: .: Can't open /etc/apache2/envvars ERROR: APACHE_PID_FILE needs to be defined in /etc/apache2/envvars invoke-rc.d: initscript apache2, action "restart" failed. 

I tried to fix it whit this command

sudo apt-get --purge --reinstall install apache2

but I got the same error.

Answer 1

apt-get remove does not remove configuration files, and you probably touched that file and messed it up so reinstalling without purging configuration will not work. So try this approach instead:

apt-get purge apache2 

and then:

apt-get install apache2 

envvars file comes in apache2 package and default should include all the necessary variables, you can brwose and check it yourself from envvars search at packages.ubuntu.com