isatty            105 usr/bin/ls/ls.c 	if (isatty(STDOUT_FILENO)) {
isatty            470 usr/bin/sh/sh.c 		if (isatty(0) && isatty(1)) {
isatty            266 usr/bin/test/test.c 			return isatty(getn(*t_wp));
isatty             90 usr/lib/libc/stdio/makebuf.c 	if (couldbetty && isatty(fp->_file))