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diff --git a/man-pages-posix-2003/man3p/isatty.3p b/man-pages-posix-2003/man3p/isatty.3p new file mode 100644 index 0000000..cca32f3 --- /dev/null +++ b/man-pages-posix-2003/man3p/isatty.3p @@ -0,0 +1,68 @@ +.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved +.TH "ISATTY" 3P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual" +.\" isatty +.SH PROLOG +This manual page is part of the POSIX Programmer's Manual. +The Linux implementation of this interface may differ (consult +the corresponding Linux manual page for details of Linux behavior), +or the interface may not be implemented on Linux. +.SH NAME +isatty \- test for a terminal device +.SH SYNOPSIS +.LP +\fB#include <unistd.h> +.br +.sp +int isatty(int\fP \fIfildes\fP\fB); +.br +\fP +.SH DESCRIPTION +.LP +The \fIisatty\fP() function shall test whether \fIfildes\fP, an open +file descriptor, is associated with a terminal +device. +.SH RETURN VALUE +.LP +The \fIisatty\fP() function shall return 1 if \fIfildes\fP is associated +with a terminal; otherwise, it shall return 0 and may +set \fIerrno\fP to indicate the error. +.SH ERRORS +.LP +The \fIisatty\fP() function may fail if: +.TP 7 +.B EBADF +The \fIfildes\fP argument is not a valid open file descriptor. +.TP 7 +.B ENOTTY +The \fIfildes\fP argument is not associated with a terminal. +.sp +.LP +\fIThe following sections are informative.\fP +.SH EXAMPLES +.LP +None. +.SH APPLICATION USAGE +.LP +The \fIisatty\fP() function does not necessarily indicate that a human +being is available for interaction via \fIfildes\fP. It +is quite possible that non-terminal devices are connected to the communications +line. +.SH RATIONALE +.LP +None. +.SH FUTURE DIRECTIONS +.LP +None. +.SH SEE ALSO +.LP +The Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<unistd.h>\fP +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. In the +event of any discrepancy between this version and the original IEEE and +The Open Group Standard, the original IEEE and The Open Group Standard +is the referee document. The original Standard can be obtained online at +http://www.opengroup.org/unix/online.html . |