Oct 26, 2018

Standard input, standard output, and standard error

Standard input, standard output, and standard error:
  1. standard input, abbreviated as stdin, is information inputted into the terminal through the keyboard or input device.
  2. standard output, abbreviated as stdout, is the information outputted after a process is run.
  3. standard error, abbreviated as stderr, is an error message outputted by a failed process.
Redirection reroutes standard input, standard output, and standard error to or from a different location.