tty (Unix)

(Redirected from Tty (unix))

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
Initial releaseNovember 3, 1971; 53 years ago (1971-11-03)
Operating systemUnix and Unix-like
PlatformCross-platform
TypeCommand

tty stands for TeleTYpewriter.[3]

Usage

edit

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 stdout 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]

See also

edit

References

edit
  1. ^ "tty". pubs.opengroup.org. Retrieved 2020-02-14.
  2. ^ "tty". man7.org.
  3. ^ "What does "TTY" stand for?". Ask Ubuntu. Retrieved 2020-02-14.
  4. ^ "tty(1) - Linux man page". linux.die.net. Retrieved 2020-02-14.
edit