ttyname, isatty - find name of a terminal

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SYNOPSIS

char *ttyname(fd)
int fd;

int isatty(fd)
int fd;

DESCRIPTION

ttyname() returns a pointer to the null-terminated path name of the terminal device associated with file descriptor fd.

isatty() returns 1 if fd is associated with a terminal device, 0 otherwise.

FILES

/dev/*

SEE ALSO

RETURN VALUES

On success, ttyname() returns a pointer to the terminal device. If fd does not describe a terminal device in directory /dev, ttyname() returns NULL.

isatty() returns 1 if fd is associated with a terminal device. It returns 0 otherwise.

BUGS

The return value points to static data which are overwritten by each call.

Created by unroff & hp-tools. © somebody (See intro for details). All Rights Reserved. Last modified 11/5/97