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| author | charnier <charnier@FreeBSD.org> | 1997-08-18 07:30:15 +0000 |
|---|---|---|
| committer | charnier <charnier@FreeBSD.org> | 1997-08-18 07:30:15 +0000 |
| commit | bb57ad2407023ae28885ef4f4d9f1636f6e39230 (patch) | |
| tree | ee101ad90a728c5556a0a9e32febd3909217884f /usr.bin/tty | |
| parent | 467a801d978294483ea1c800047e075736a71d3f (diff) | |
| download | FreeBSD-src-bb57ad2407023ae28885ef4f4d9f1636f6e39230.zip FreeBSD-src-bb57ad2407023ae28885ef4f4d9f1636f6e39230.tar.gz | |
Add usage().
Diffstat (limited to 'usr.bin/tty')
| -rw-r--r-- | usr.bin/tty/tty.1 | 10 | ||||
| -rw-r--r-- | usr.bin/tty/tty.c | 20 |
2 files changed, 22 insertions, 8 deletions
diff --git a/usr.bin/tty/tty.1 b/usr.bin/tty/tty.1 index 9c47b70..67f2d63 100644 --- a/usr.bin/tty/tty.1 +++ b/usr.bin/tty/tty.1 @@ -33,7 +33,7 @@ .\" SUCH DAMAGE. .\" .\" @(#)tty.1 8.1 (Berkeley) 6/6/93 -.\" $Id$ +.\" $Id: tty.1,v 1.4 1997/02/22 19:57:29 peter Exp $ .\" .Dd June 6, 1993 .Dt TTY 1 @@ -42,11 +42,11 @@ .Nm tty .Nd return user's terminal name .Sh SYNOPSIS -.Nm tty +.Nm .Op Fl s .Sh DESCRIPTION The -.Nm tty +.Nm utility writes the name of the terminal attached to standard input to standard output. The name that is written is the string returned by @@ -73,8 +73,8 @@ not a terminal, and >1 if an error occurs. .Xr ttyname 3 .Sh STANDARDS The -.Nm tty -function is expected to be +.Nm +utility is expected to be .St -p1003.2 compatible. .Sh HISTORY diff --git a/usr.bin/tty/tty.c b/usr.bin/tty/tty.c index 88cd60a..7a7e688 100644 --- a/usr.bin/tty/tty.c +++ b/usr.bin/tty/tty.c @@ -32,17 +32,25 @@ */ #ifndef lint -static char copyright[] = +static const char copyright[] = "@(#) Copyright (c) 1988, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint +#if 0 static char sccsid[] = "@(#)tty.c 8.1 (Berkeley) 6/6/93"; +#endif +static const char rcsid[] = + "$Id$"; #endif /* not lint */ #include <stdio.h> +#include <unistd.h> +static void usage __P((void)); + +int main(argc, argv) int argc; char **argv; @@ -58,8 +66,7 @@ main(argc, argv) break; case '?': default: - fputs("usage: tty [-s]\n", stderr); - exit(2); + usage(); } t = ttyname(0); @@ -67,3 +74,10 @@ main(argc, argv) puts(t ? t : "not a tty"); exit(t ? 0 : 1); } + +static void +usage() +{ + fprintf(stderr, "usage: tty [-s]\n"); + exit(2); +} |
