getty(8) [mojave man page]
GETTY(8) BSD System Manager's Manual GETTY(8) NAME
getty -- set terminal mode SYNOPSIS
getty [type [tty]] DESCRIPTION
The getty utility is called by launchd(8) to open and initialize the tty line, read a login name, and invoke login(1). 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 argu- ment 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 specially. This argument is used as an index into the gettytab(5) data- base, 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 ban- ner heading, and prompt for a login name. Usually either the banner or the login prompt will include the system hostname. Most of the default actions of getty can be circumvented, or modified, by a suitable gettytab table. The getty utility can be set to timeout after some interval, which will cause dial up lines to hang up if the login name is not entered rea- sonably quickly. FILES
/etc/gettytab /etc/ttys DIAGNOSTICS
ttyxx: No such device or address. ttyxx: No such file or address. A terminal which is turned on in the ttys file cannot be opened, likely because the requisite lines are either not configured into the sys- tem, the associated device was not attached during boot-time system configuration, or the special file in /dev does not exist. SEE ALSO
login(1), ioctl(2), tty(4), gettytab(5), ttys(5), launchd(8) HISTORY
A getty utility appeared in Version 6 AT&T UNIX. BSD
June 4, 1993 BSD
Check Out this Related Man Page
getty(8) System Manager's Manual getty(8) NAME
getty - Sets the terminal type, modes, speed, and line discipline SYNOPSIS
getty [-h] [-t time] line speed_label terminal line_discipline getty -c file FLAGS
Hold the carrier during the initialization phase;do not hang up. Set the time period to the specified number of seconds. Drop the line after that amount of time if nothing is typed. Check the specified gettydefs file. DESCRIPTION
The getty command sets and manages terminals by setting up speed, terminal flags, and the line discipline. If command flags are provided, getty adapts the system to those specifications. getty prints the login prompt, waits for the user to enter a username, and invokes the login command. getty uses the /etc/gettydefs file for terminal information. The line argument refers to the device name in /dev. The speed_label argu- ment is a pointer into the /etc/gettydefs file where the definitions for speed and other associated flags are located. The terminal argu- ment specifies the name of the terminal type. The line_discipline argument specifies the name of the line discipline. The second syntax for the getty command provides a check option. When getty is invoked with the -c option and filename argument, it checks the specified file in the same way it scans gettydefs for terminal information, then prints the results to standard output. By default, the getty daemon writes the login string specified in the message field of the /etc/gettydefs file to any terminal spawned or respawned from the /etc/inittab file. If an /etc/issue file present, getty reads the file and writes its contents to the terminal prior to writing the login string specified in the /etc/gettydefs file. FILES
Specifies the command path. Specifies the terminal line database file. Specifies the path name for the issue identification file RELATED INFORMATION
Commands: init(8), login(1), stty(1) Files: issue(4). delim off getty(8)