How to open command prompt in Nodejs

In Node.js, you can open the command prompt through the spawn method of the child_process module.

First, you need to introduce the child_process module into the code:

const { spawn } = require('child_process');

Then, where you want to open the command prompt, execute the spawn method:

const cmd = spawn('cmd');

This will be the current Open a command prompt window at the location. If you want to open the command prompt at a specific location, you can pass a specific path in the spawn method:

const cmd = spawn('cmd', ['/k', 'cd', 'C:/Users/Username/Path']);

This will open the command prompt at the location "C:/Users/Username/Path".

In the command prompt that opens, you can execute any supported command. For example, you can list the files and directories of the current directory:

cmd.stdin.write('dir 
');

This will execute the "dir" command in the command prompt and output the results.

When the command prompt is not needed, you can use the following code to close it:

cmd.stdin.end();

Complete code example:

const { spawn } = require('child_process');

const cmd = spawn('cmd', ['/k', 'cd', 'C:/Users/Username/Path']);

cmd.stdout.on('data', (data) => {
  console.log(`stdout: ${data}`);
});

cmd.stderr.on('data', (data) => {
  console.error(`stderr: ${data}`);
});

cmd.on('close', (code) => {
  console.log(`child process exited with code ${code}`);
});

cmd.stdin.write('dir 
');

cmd.stdin.end();

The above code will be in "C:/Users/ Open the command prompt under the "Username/Path" location and execute the "dir" command to output the results to the console. When the command prompt is closed, the subprocess exit code will be output.

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