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Quick links About
halt, poweroff and reboot
Syntax
Examples
Related commands
Linux / Unix main page
About halt, poweroff and reboot
Stop the computer.
Syntax
halt [-l] [-n] [-q] [-y]
or
halt [-n] [-w] [-d] [-f] [-i] [-p] [-h]
reboot [-n] [-w] [-d] [-f] [-i]
poweroff [-n] [-w] [-d] [-f] [-i] [-h]
| -d |
Don't write the wtmp record. The -n flag implies -d. |
| -h |
Put all harddrives on the system in standby mode
just before halt or poweroff. |
| -i |
Shut down all network interfaces just before halt
or reboot. |
| -l |
Suppress sending a message to the system log
daemon, syslogd, about who executed halt . |
| -n |
Prevent the sync before reboot
or halt. |
| -p |
When halting the system, do a poweroff. This is the default when halt is called as poweroff. |
| -q |
Quick halt. No graceful shutdown is attempted. |
| -r |
Force halt or reboot, don't call
shutdown. |
| -y |
Halt the system, even from a dialup terminal. |
| -w |
Don't actually reboot or halt but only write the wtmp record (in the /var/log/wtmp file). |
Examples
halt
Set the computer to a mode that enables a user to turn off
the computer.
poweroff
Stop the processor (if you have
proper permission).
Related commands
Shutdown
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