Read from a file
require('libsys/shim');
const libjs = require('libjs');
const O_RDONLY = 0;
const fd = libjs.open(__filename, O_RDONLY);
if(fd > -1) {
const buf = new Buffer(1024);
const bytes_read = libjs.read(fd, buf);
console.log('Bytes read: ', bytes_read);
console.log(buf.toString().substr(0, bytes_read));
} else {
console.log('Error: ', fd);
}