TTYNAME(3-BSD)      RISC/os Reference Manual       TTYNAME(3-BSD)



NAME
     ttyname, isatty, ttyslot - find name of a terminal

SYNOPSIS
     char *ttyname(filedes)

     isatty(filedes)

     ttyslot()

DESCRIPTION
     ttyname returns a pointer to the null-terminated path name
     of the terminal device associated with file descriptor
     filedes (this is a system file descriptor and has nothing to
     do with the standard I/O FILE typedef).

     isatty returns 1 if filedes is associated with a terminal
     device, 0 otherwise.

     ttyslot returns the number of the entry in the ttys(5) file
     for the control terminal of the current process.

FILES
     /dev/*
     /etc/ttys

SEE ALSO
     ioctl(2), ttys(5)

DIAGNOSTICS
     ttyname returns a null pointer (0) if filedes does not
     describe a terminal device in directory `/dev'.

     ttyslot returns 0 if `/etc/ttys' is inaccessible or if it
     cannot determine the control terminal.

ERRORS
     The return value points to static data whose content is
     overwritten by each call.
















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