| GETTY(8) | System Manager's Manual | GETTY(8) | 
getty, uugetty —
| getty | [type [tty]] | 
| uugetty | [type [tty]] | 
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) negotiation, 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”
    account with command line interface, or a PPP network link.
The argument tty is the special device file
    in /dev to open for the terminal (for example,
    “ttyh0”). If there is no argument or the argument is
    ‘-
The type argument can be used to make
    getty treat the terminal line specially. 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 table located, getty will clear
    the terminal screen, print a banner heading, 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 reasonably quickly.
The uugetty program is the same, except
    that it uses pidlock(3) to
    respect the locks in /var/spool/lock of processes
    that dial out on that tty.
getty program appeared in
  Version 6 AT&T UNIX.
| May 29, 2013 | NetBSD 9.4 |