This function writes data to a Linux process. This data is sent as a byte or series of bytes. write() inherits from the Stream utility class.
Process.write(val) Process.write(str) Process.write(buf, len)
- val: a value to send as a single byte
- str: a string to send as a series of bytes
- buf: an array to send as a series of bytes
- len: the length of the buffer