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shutdown
<html> <head> <title>shutdown</title> <META NAME="KEYWORDS" CONTENT="shutdown"> </head> <body BGCOLOR="#ffffff" LINK="#0000ff" VLINK="#0000ff" ALINK="#0000ff" TEXT="#000000"> <center> <h1><b>shutdown</b></h1></center> <PRE> <STRONG><A HREF="/man8/SHUTDOWN">SHUTDOWN(8)</A></STRONG> shutdown <STRONG><A HREF="/man8/SHUTDOWN">SHUTDOWN(8)</A></STRONG> NAME shutdown - Halt, power-off or reboot the machine SYNOPSIS shutdown [OPTIONS...] [TIME] [WALL...] DESCRIPTION shutdown may be used to halt, power-off or reboot the machine. The first argument may be a time string (which is usually "now"). Optionally, this may be followed by a wall message to be sent to all logged-in users before going down. The time string may either be in the format "hh:mm" for hour/minutes specifying the time to execute the shutdown at, specified in 24h clock format. Alternatively it may be in the syntax "+m" referring to the specified number of minutes m from now. "now" is an alias for "+0", i.e. for triggering an immediate shutdown. If no time argument is specified, "+1" is implied. Note that to specify a wall message you must specify a time argument, too. If the time argument is used, 5 minutes before the system goes down the /run/nologin file is created to ensure that further logins shall not be allowed. OPTIONS The following options are understood: --help Print a short help text and exit. -H, --halt Halt the machine. -P, --poweroff Power-off the machine (the default). -r, --reboot Reboot the machine. -h Equivalent to --poweroff, unless --halt is specified. -k Do not halt, power-off, reboot, just write wall message. --no-wall Do not send wall message before halt, power-off, reboot. -c Cancel a pending shutdown. This may be used to cancel the effect of an invocation of shutdown with a time argument that is not "+0" or "now". EXIT STATUS On success, 0 is returned, a non-zero failure code otherwise. SEE ALSO <STRONG><A HREF="/man1/systemd">systemd(1)</A></STRONG>, <STRONG><A HREF="/man1/systemctl">systemctl(1)</A></STRONG>, <STRONG><A HREF="/man8/halt">halt(8)</A></STRONG>, <STRONG><A HREF="/man1/wall">wall(1)</A></STRONG> systemd 245 <STRONG><A HREF="/man8/SHUTDOWN">SHUTDOWN(8)</A></STRONG></PRE> <center> <h6>Man Pages Copyright Respective Owners. Site Copyright (C) 1994 - 2025 <a href="http://www.he.net">Hurricane Electric</a>. All Rights Reserved.</h6></center> </body> </html>