1TTYNAME(3)                 Library Functions Manual                 TTYNAME(3)
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NAME

6       ttyname, isatty, ttyslot - find name of a terminal
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SYNOPSIS

9       char *ttyname(fildes)
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11       isatty(fildes)
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13       ttyslot()
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DESCRIPTION

16       Ttyname  returns a pointer to the null-terminated path name of the ter‐
17       minal device associated with file descriptor fildes.
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19       Isatty returns 1 if fildes is associated with a terminal device, 0 oth‐
20       erwise.
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22       Ttyslot  returns  the  number  of the entry in the ttys(5) file for the
23       control terminal of the current process.
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FILES

26       /dev/*
27       /etc/ttys
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SEE ALSO

30       ioctl(2), ttys(5)
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DIAGNOSTICS

33       Ttyname returns a null pointer (0) if fildes does not describe a termi‐
34       nal device in directory `/dev'.
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36       Ttyslot returns 0 if `/etc/ttys' is inaccessible or if it cannot deter‐
37       mine the control terminal.
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BUGS

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