HP Integrity rx2620 User's & Service Manual page 133

The Red Hat Enterprise Linux and SuSE Linux Enterprise Server shutdown command
has the following options:
Halts (powers off) after shutdown.
-h
Use the PC command at the iLO MP Command menu to manually power on
or power off server hardware, as needed.
Reboots after shutdown.
-r
Cancels an already running shutdown.
-c
When to shut down. (Required.) You can specify time in the following ways:
time
Absolute time in the format hh:mm, in which hh is the hour (one or two
digits) and mm is the minute of the hour (two digits).
Number of minutes to wait in the format +m, in which m is the number of
minutes.
To immediately shut down, use the now command; this is equivalent to
using +0 to wait zero minutes.
See the shutdown(8) Linux manpage. Also see the Linux manpage for the poweroff
command.
1. From the command line for Red Hat Enterprise Linux or SuSE Linux Enterprise
Server, issue the shutdown command to shut down the operating system.
2. Log in to Linux running on the server you want to shut down.
3. Issue the shutdown command with the desired command-line options, and
include the required time argument to specify when the operating system
shutdown is to occur.
For example, shutdown -r +20 shuts down and reboots the server in 20
minutes.
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