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-.TH ISATTY 3 2008-12-03 "Linux" "Linux Programmer's Manual"
+.TH ISATTY 3 2014-01-27 "Linux" "Linux Programmer's Manual"
.SH NAME
isatty \- test whether a file descriptor refers to a terminal
.SH SYNOPSIS
.BR ENOTTY
.\" FIXME File a bug for this?
for this case.
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR isatty ()
+function is thread-safe.
.SH CONFORMING TO
SVr4, 4.3BSD, POSIX.1-2001.
.SH SEE ALSO