FreeBSD 7.0 manual page repository

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tty - return user’s terminal name



      tty - return user’s terminal name


      tty [-s]


      The tty utility writes the name of the terminal attached to standard
      input to standard output.  The name that is written is the string
      returned by ttyname(3).  If the standard input is not a terminal, the
      message “not a tty” is written.  The options are as follows:
      -s      Do not write the terminal name; only the exit status is affected
              when this option is specified.  The -s option is deprecated in
              favor of the “test -t 0” command.
      The tty utility exits 0 if the standard input is a terminal, 1 if the
      standard input is not a terminal, and >1 if an error occurs.
      test(1), ttyname(3)


      The tty utility is expected to be IEEE Std 1003.2 (“POSIX.2”) compatible.


      A tty command appeared in Version 1 AT&T UNIX.


Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.