tty.1 (c3aac50f284c6cca5b4f2eb46aaa13812cb8b630) tty.1 (e8937ba00998cca6f259b3fdf32a7f7a38bc26ec)
1.\" Copyright (c) 1990, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" This code is derived from software contributed to Berkeley by
5.\" the Institute of Electrical and Electronics Engineers, Inc.
6.\"
7.\" Redistribution and use in source and binary forms, with or without
8.\" modification, are permitted provided that the following conditions

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60when this option is specified.
61The
62.Fl s
63option is deprecated in favor of the
64.Dq Li "test -t 0"
65command.
66.El
67.Pp
1.\" Copyright (c) 1990, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" This code is derived from software contributed to Berkeley by
5.\" the Institute of Electrical and Electronics Engineers, Inc.
6.\"
7.\" Redistribution and use in source and binary forms, with or without
8.\" modification, are permitted provided that the following conditions

--- 51 unchanged lines hidden (view full) ---

60when this option is specified.
61The
62.Fl s
63option is deprecated in favor of the
64.Dq Li "test -t 0"
65command.
66.El
67.Pp
68.Nm Tty
68The
69.Nm
70utility
69exits 0 if the standard input is a terminal, 1 if the standard input is
70not a terminal, and >1 if an error occurs.
71.Sh SEE ALSO
72.Xr test 1 ,
73.Xr ttyname 3
74.Sh STANDARDS
75The
76.Nm
77utility is expected to be
78.St -p1003.2
79compatible.
80.Sh HISTORY
81A
82.Nm
83command appeared in
84.At v1 .
71exits 0 if the standard input is a terminal, 1 if the standard input is
72not a terminal, and >1 if an error occurs.
73.Sh SEE ALSO
74.Xr test 1 ,
75.Xr ttyname 3
76.Sh STANDARDS
77The
78.Nm
79utility is expected to be
80.St -p1003.2
81compatible.
82.Sh HISTORY
83A
84.Nm
85command appeared in
86.At v1 .