1. Run the following command:

1.1 Deleting nginx – Purge includes configuration files
sudo apt-get --purge remove nginx
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1.2 Automatically Removing All Software Packages that are not used
sudo apt-get autoremove
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1.3 List nginx-related software
dpkg --get-selections|grep nginx
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1.4 Delete 1.3 Querying Nginx-related software
sudo apt-get --purge remove nginx
sudo apt-get --purge remove nginx-common
sudo apt-get --purge remove nginx-full
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This way you can completely uninstall nginx including configuration files

2. Check the running processes of nginx and kill them

Nginx is still running after executing 1.
ps -ef |grep nginx
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2.2. The kill nginx process
sudo kill9 the process IDCopy the code
2.3. global search for nginx-related files
sudo find / -name nginx*
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2.4. Yee deletes all files listed in 4
sudo rm -rf file
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This removes nginx completely

3. Reinstall

sudo apt-get update
sudo apt-get install nginx
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4. Check whether the installation is successful

sudo /etc/init.d/nginx start
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