The sulogin utility is automatically invoked by init when the system is first started. It prompts the user to type the root password to enter system maintenance mode (single-user mode) or to type EOF (typically CTRL-D) for normal startup (multi-user mode). The user should never directly invoke sulogin.

The sulogin utility can prompt the user to enter the root password on a variable number of serial console devices, in addition to the traditional console device. See consadm(1M) and msglog(7D) for a description of how to configure a serial device to display the single-user login prompt.

/etc/default/sulogin

Default value can be set for the following flag:

PASSREQ

Determines if login requires a password. Default is PASSREQ=YES.

/etc/default/login

Default value can be set for the following flag:

SLEEPTIME

If present, sets the number of seconds to wait before login failure is printed to the screen and another login attempt is allowed. Default is 4 seconds. Minimum is 0 seconds. Maximum is 5 seconds.

See attributes(5) for descriptions of the following attributes:

consadm(1M),init(1M), attributes(5),msglog(7D)