Check whether nginx is started

Check whether nginx is started?

Below I will share the process record of checking whether Nginx is started in Linux.

Recommended: "Nginx Tutorial"

Judge by process

The first method: View the process list and filter

Every Linux application will generate a process, so we can determine whether it is started by checking whether the Nginx process exists.

Use ps -ef to list the process, and then filter it through grep.

For example: ps -ef | grep nginx You can see whether the Nginx process exists.

Second method: Check the process id directly

ps -C nginx -o pid

This method of directly returning the pid is more suitable for use in conjunction with other programs, such as executing this command in a shell/python script to get the pid , and then use the pid to determine whether Nginx is started.

It is recommended to use this method.

Judge by port

The third method: use the netstat command

If our Nginx is running on port 80, then we can pass netstat - anp | grep :80 command to determine whether Nginx is started.

Fourth method: Use the lsof command

lsof -i:80 You can also check whether there is a process running on port 80.

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