To run a command in Lua, you simply need to write the command in the Lua interpreter or in a Lua script file, and then execute the interpreter or run the script file.
Here's an example of running a command in the Lua interpreter:
1. Open the Lua interpreter in your terminal or command prompt.
2. Type the command you want to run, such as print("Hello, world!").
3. Press enter to execute the command.
The interpreter should print "Hello, world!" to the screen.
Here's an example of running a command in a Lua script file:
1. Open a text editor and create a new file.
2. Write the command you want to run in the file, such as print("Hello, world!").
3. Save the file with a .lua extension, such as "hello.lua".
4. Open a terminal or command prompt and navigate to the directory where the file is saved.
5. Type lua hello.lua and press enter to execute the script.
The script should print "Hello, world!" to the screen.
Note that the command print("Hello, world!") simply prints the text "Hello, world!" to the screen. You can replace it with other Lua commands or functions depending on what you want to do.