Introduction
getty (sometimes known as agetty) is a Unix program that manages physical or virtual terminals. It is typically invoked by the init process, and presents a login prompt to the user. It is the first process started during booting, and continues running until the system is shut down. It is responsible for setting up the system environment, and for prompting the user for a login name and password. It is also responsible for setting up the terminal settings, such as baud rate, parity, and flow control.
Examples
The agetty command is used to open a terminal session on a Linux system. It is typically used to open a login prompt on a serial port or a virtual console. It is usually invoked by the init process when the system boots up.
Syntax: agetty [options]
Options:
-h, –help: Display help information
-L, –local: Do not attempt to do remote logins
-m, –mingetty: Use mingetty instead of agetty
-s, –secure: Disable logins for non-root users
-l, –login: Specify the login program to use
Example:
agetty -L ttyS0 9600 vt100
This command will open a login prompt on the serial port ttyS0 at a baud rate of 9600 and a terminal type of vt100.
The agetty command is a Linux utility used to open a terminal session on a Linux system. It is typically used to open a login session on a virtual console or a serial line. It is part of the util-linux package and is available on most Linux distributions.
The agetty command is used to open a terminal session on a Linux system. It is typically used to open a login session on a virtual console or a serial line. It is part of the util-linux package and is available on most Linux distributions.
The syntax for the agetty command is as follows:
agetty [options] [tty-device] [baud-rate] [terminal-type]
The options for the agetty command are as follows:
- -h: This option is used to display help information.
- -i: This option is used to ignore the modem control lines.
- -L: This option is used to enable local line editing.
- -m: This option is used to enable modem control.
- -s: This option is used to enable the secure mode.
The tty-device is the name of the terminal device, such as ttyS0 or ttyS1. The baud-rate is the speed of the connection, such as 9600 or 19200. The terminal-type is the type of terminal, such as vt100 or xterm.
To open a login session on a virtual console, use the following command:
agetty tty1 9600 vt100
This will open a login session on the virtual console tty1 at a baud rate of 9600 and a terminal type of vt100.
