2 isatty - returns 1 if fd assocatied with a tty
13 This function returns 1 if fd is associated with a tty, 0 otherwise.
17 ; print isatty(files(0)), isatty(files(1)), isatty(files(2))
19 ; fd = fopen("/dev/null", "r")
30 errno, fclose, feof, ferror, fflush, fgetc, fgetline, fgets, files, fopen,
31 fprintf, fputc, fputs, fseek, fsize, ftell, isfile, printf, prompt,
32 isassoc, isblk, isconfig, isdefined, iserror, iseven, isfile,
33 ishash, isident, isint, islist, ismat, ismult, isnull, isnum, isobj,
34 isobjtype, isodd, isprime, isrand, israndom, isreal, isrel,
35 issimple, issq, isstr, istype
37 ## Copyright (C) 1999 Landon Curt Noll
39 ## Calc is open software; you can redistribute it and/or modify it under
40 ## the terms of the version 2.1 of the GNU Lesser General Public License
41 ## as published by the Free Software Foundation.
43 ## Calc is distributed in the hope that it will be useful, but WITHOUT
44 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
45 ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
46 ## Public License for more details.
48 ## A copy of version 2.1 of the GNU Lesser General Public License is
49 ## distributed with calc under the filename COPYING-LGPL. You should have
50 ## received a copy with calc; if not, write to Free Software Foundation, Inc.
51 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
53 ## @(#) $Revision: 30.1 $
54 ## @(#) $Id: isatty,v 30.1 2007/03/16 11:10:42 chongo Exp $
55 ## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/isatty,v $
57 ## Under source code control: 1995/07/09 03:49:34
58 ## File existed as early as: 1995
60 ## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
61 ## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/