I am using child_process.exec to execute Ubuntu commands with node.js in coffeescript. When I execute the following commands:
list = child_process.exec("ls")
print list
It prints this:
[Object Object]
Why isn't a proper output of ls command printed? What should I do to get a proper output for commands?
You're attempting to run an asynchronous function synchronously. The correct way to do this is:
var exec = require('child_process').exec;
exec('ls', function (error, stdout, stderr) {
console.log(stdout);
});
Source: https://nodejs.org/api/child_process.html#child_process_child_process_exec_command_options_callback
If you really wish to execute a command synchronously, you can use execSync. However, I'd advise against that, since it blocks your node code from doing anything until the process finishes.
ExecSync: https://nodejs.org/api/child_process.html#child_process_child_process_execsync_command_options
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