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GETTTYENT(3)               Linux Programmer's Manual              GETTTYENT(3)

NAME
       getttyent, getttynam, setttyent, endttyent - get ttys file entry

SYNOPSIS
       #include <ttyent.h>

       struct ttyent *getttyent(void);

       struct ttyent *getttynam(const char *name);

       int setttyent(void);

       int endttyent(void);

DESCRIPTION
       These  functions  provide  an  interface  to the file _PATH_TTYS (e.g.,
       /etc/ttys).

       The function setttyent() opens the file or rewinds it if already  open.

       The function endttyent() closes the file.

       The  function getttynam() searches for a given ttyname in the file.  It
       returns a pointer to a ttyent structure (description below).

       The function getttyent() opens the file _PATH_TTYS (if  necessary)  and
       returns  the first entry.  If the file is already open, the next entry.
       The ttyent structure has the form:

           struct ttyent {
               char *ty_name;     /* terminal device name */
               char *ty_getty;    /* command to execute, usually getty */
               char *ty_type;     /* terminal type for termcap */
               int   ty_status;   /* status flags */
               char *ty_window;   /* command to start up window manager */
               char *ty_comment;  /* comment field */
           };

       ty_status can be:

       #define TTY_ON     0x01  /* enable logins (start ty_getty program) */
       #define TTY_SECURE 0x02  /* allow UID 0 to login */

CONFORMING TO
       Not in POSIX.1-2001.  Present on the BSDs, and perhaps other systems.

NOTES
       Under Linux the file /etc/ttys, and the functions described above,  are
       not used.

SEE ALSO
       ttyname(3), ttyslot(3)

COLOPHON
       This  page  is  part of release 3.25 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU                               2002-07-18                      GETTTYENT(3)
 

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Gedruckt am: 14.12.2017 11:17 GMT+0100 (2017-12-14T11:17:48+01:00)