Before installing Nginx, please check your system type and whether the Nginx service is already installed or running on the system.

Execute the following command to check if there is already an Nginx process running.

ps -aux|grep nginx

If the terminal displays a result similar to the following, it indicates that an nginx process is already running. You don't need to install nginx again.

root      179252  0.0  0.3  56732 11760 ?        S    Sep27   0:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;

If the terminal does not produce the expected results, please check whether the system has installed nginx but not running the service by searching for nginx executable programs. Execute the following command to search for nginx executable programs.

cd /
find -name nginx

If the system has already installed nginx, it will display a result similar to the following.

./usr/share/doc/nginx
./usr/sbin/nginx
./var/log/nginx

Query system type

uname -a

The installation of nginx varies among different Linux systems.

For Ubuntu/Debian

sudo apt update
sudo apt install nginx

For Centos

sudo yum install epel-release
sudo yum install nginx

For Fedora

sudo dnf install nginx

Start nginx service

sudo systemctl start nginx
sudo systemctl enable nginx

Find nginx configuration file path

root@iZt4n2mwfzq1jm449llyl2Z:~# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Based on the above result, start editing the nginx configuration file.