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62 lines
1.9 KiB
Plaintext
62 lines
1.9 KiB
Plaintext
NAME
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isatty - returns 1 if fd assocatied with a tty
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SYNOPSIS
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isatty(fd)
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TYPES
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fd any
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return int
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DESCRIPTION
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This function returns 1 if fd is associated with a tty, 0 otherwise.
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EXAMPLE
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> print isatty(files(0)), isatty(files(1)), isatty(files(2))
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1 1 1
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> fd = fopen("/dev/null", "r")
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> isatty(fd)
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0
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LIMITS
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none
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LINK LIBRARY
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none
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SEE ALSO
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errno, fclose, feof, ferror, fflush, fgetc, fgetline, fgets, files, fopen,
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fprintf, fputc, fputs, fseek, fsize, ftell, isfile, printf, prompt,
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isassoc, isblk, isconfig, isdefined, iserror, iseven, isfile,
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ishash, isident, isint, islist, ismat, ismult, isnull, isnum, isobj,
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isobjtype, isodd, isprime, isrand, israndom, isreal, isrel,
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issimple, issq, isstr, istype
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## Copyright (C) 1999 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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##
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## @(#) $Revision: 29.1 $
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## @(#) $Id: isatty,v 29.1 1999/12/14 09:15:54 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/isatty,v $
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##
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## Under source code control: 1995/07/09 03:49:34
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## File existed as early as: 1995
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##
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## chongo <was here> /\oo/\ http://reality.sgi.com/chongo/
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## Share and enjoy! :-) http://reality.sgi.com/chongo/tech/comp/calc/
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