Learn The Basics of How Input-Output Redirection Works.md 702 B
Title: "Learn The Basics of How Input-Output Redirection Works" Date: 2017-01-18 18:56:51 Categories: [os] tags: ["i/o redirection", shell]
Authors: sedlav
In Linux and other Unix-like systems, there are three default files named below which are also identified by the shell using file descriptor numbers:
stdin or 0 – it’s connected to the keyboard, most programs read input from this file.
stdout or 1 – it’s attached to the screen, and all programs send their results to this file and
stderr or 2 – programs send status/error messages to this file which is also attached to the screen.