How to install nginx and install the configuration files too

Solution 1:

Run apt-get remove --purge nginx nginx-full nginx-common first, and then apt-get install nginx and see if it works.

Solution 2:

first

sudo apt-get -o DPkg::options::=--force-confmiss --reinstall install nginx-common

then test

sudo nginx -t

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Solution 3:

sudo apt-get --purge autoremove nginx

If you are not prompted to prove successful uninstall

 which nginx