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GETTY(8)		  BSD System Manager's Manual		      GETTY(8)

     getty, uugetty -- set terminal modes for system access

     getty [type [tty]]
     uugetty [type [tty]]

     The getty program is called by init(8) to open and	initialize the tty
     line, read	a login	name, and invoke login(1).  The	devices	on which to
     run getty are normally determined by ttys(5).

     The getty program can also	recognize a Point to Point Protocol (PPP) ne-
     gotiation,	and, if	the pp attribute in gettytab(5)	is set,	invoke the
     program given by that string, e.g., pppd(8), instead of login(1).	This
     makes it possible to use a	single serial port for either a	"shell"	ac-
     count with	command	line interface,	or a PPP network link.

     The argument tty is the special device file in /dev to open for the ter-
     minal (for	example, "ttyh0").  If there is	no argument or the argument is
     `-', the tty line is assumed to be	open as	file descriptor	0.

     The type argument can be used to make getty treat the terminal line spe-
     cially.  This argument is used as an index	into the gettytab(5) database,
     to	determine the characteristics of the line.  If there is	no argument,
     or	there is no such table,	the default table is used.  If there is	no
     /etc/gettytab a set of system defaults is used.  If indicated by the ta-
     ble located, getty	will clear the terminal	screen,	print a	banner head-
     ing, and prompt for a login name.	Usually	either the banner or the login
     prompt will include the system hostname.

     getty uses	the ttyaction(3) facility with an action of "getty" and	user
     "root" to execute site-specific commands when it starts.

     Most of the default actions of getty can be circumvented, or modified, by
     a suitable	gettytab(5) table.

     The getty program can be set to timeout after some	interval, which	will
     cause dial	up lines to hang up if the login name is not entered reason-
     ably quickly.

     The uugetty program is the	same, except that it uses pidlock(3) to	re-
     spect the locks in	/var/spool/lock	of processes that dial out on that


     ttyxx: No such device or address.
     ttyxx: No such file or address.  A	terminal which is turned on in the
     ttys(5) file cannot be opened, likely because the requisite lines are ei-
     ther not configured into the system, the associated device	was not	at-
     tached during boot-time system configuration, or the special file in /dev
     does not exist.

     login(1), ioctl(2), pidlock(3), ttyaction(3), tty(4), gettytab(5),
     ttys(5), init(8), pppd(8)

     A getty program appeared in Version 6 AT&T	UNIX.

BSD			       December	12, 1998			   BSD


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