Tty (Unix)
Command to print the file name of the terminal connected to standard input
From Wikipedia, the free encyclopedia
In computing, tty is a command in Unix and Unix-like operating systems to print the file name of the terminal connected to standard input.[1][2]
| tty | |
|---|---|
tty command on a Void Linux machine | |
| Initial release | November 3, 1971 |
| Operating system | Unix and Unix-like |
| Platform | Cross-platform |
| Type | Command |
tty stands for "teletypewriter".[3]
Usage
The tty command is commonly used to check if the output medium is a terminal. The command prints the file name of the terminal connected to standard input. If no file is detected (in case, it's being run as part of a script or the command is being piped) "not a tty" is printed to standard output and the command exits with an exit status of 1. The command also can be run in silent mode (tty -s) where no output is produced, and the command exits with an appropriate exit status.[4]
