tty (Unix)
| tty | |
|---|---|
 tty command on a Void Linux machine | |
| Release | November 3, 1971 |
| Operating system | Unix and Unix-like |
| Platform | Cross-platform |
| Type | Command |
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 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 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]
See also
[edit]References
[edit]- ↑ "tty". pubs.opengroup.org. Retrieved 2020-02-14.
- ↑ "tty". man7.org.
- ↑ "What does "TTY" stand for?". Ask Ubuntu. Retrieved 2020-02-14.
- ↑ "tty(1) - Linux man page". linux.die.net. Retrieved 2020-02-14.
External links
[edit]- – Shell and Utilities Reference, The Single UNIX Specification, Version 5 from The Open Group
- – FreeBSD General Commands Manual
- – NetBSD General Commands Manual
- – OpenBSD General Commands Manual
- – Solaris 11.4 User Commands Reference Manual
- – Linux User Commands Manual
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