How to send control C node.js and child_processes

child-process, node.js, windows

Solution

I found your previous question. Looks like you are trying to create/emulate a terminal from within node.js. You can use readline for reading and writing from a terminal.

To write control character, you can see the example from its docs :

  rl.write('Delete me!');
  // Simulate ctrl+u to delete the line written previously
  rl.write(null, {ctrl: true, name: 'u'});

To directly answer the question, to pass special characters you will need to pass their ASCII values. Ctrl + C becomes ASCII character 0x03. Value taken from here.

  spawn.stdin.write("\x03");

Problem

Hello I want to send to the child_process, for example, ping 8.8.8.8-t, that is, an infinite number of ping. And some of the iterations I want to stop this command and execute a new, but in this case I do not want to kill a child process. Example: ``` var spawn = require('child_process').spawn('cmd'), iconv = require('iconv-lite'); spawn.stdout.on('data', function (data) { console.log('Stdout: ', iconv.decode(data, 'cp866')); }); spawn.stderr.on('data', function (data) { console.log('Stderr: ', iconv.decode(data, 'cp866')); }); spawn.stdin.write('ping 8.8.8.8 -t'+ '\r\n'); spawn.stdin.write(here control-c...); // WRONG spawn.stdin.write('dir' + '\r\n'); ```

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