.TH SHUTDOWN 8 .SH NAME shutdown \- orderly system shutdown .SH SYNOPSIS .B /etc/shutdown [ time ] .SH DESCRIPTION The .I shutdown command allows the super-user and no one else to bring the system down in an orderly fashion. Shutdown may only be run from the console terminal. The optional .I time argument is the time delay in minutes until the shutdown will occur. If the .I time is not given shutdown will ask for the shutdown time delay. .PP Once invoked .I shutdown ; disables logins for all but the console terminal, sends a shutdown warning message to all logged in users every minute until shutdown time arrives, sends a final shutdown warning message, kills all processes except process group zero, dismounts all but the root file system, syncs the disks, and brings the system down to single-user mode. The shutdown may be aborted by typing a `delete' on the console terminal. .SH FILES /etc/sdloglock disables user logins .br /unix system namelist .br /dev/mem core memory .br /dev searched to find swap device and tty names .SH BUGS Multi-user mode cannot be reestablished by typing control D (EOT) after the shutdown has reached single-user mode, the system must be rebooted.