Power off a Solaris system

Contributor Icon Contributed by qmchenry Date Icon September 4, 2003  
Tag Icon Tagged: Solaris

Safely turn off a Solaris system using the init command


As superuser,

sync; sync; init 5

Using the init command instead of other options causes the system to use the runtime control scripts in /etc/rc0.d to stop system processes nicely and prevent data corruption.

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  • Anonymous
    Sync is no longer necessary in any modern version of Unix (Solaris and Linux included). If you're a system administrator, you should learn proper use of the init command, which allows you to change runlevels. Here are a few different uses of init:

    # init 6 - reboots the system
    # init 5 - halts the system (turns power off)
    # init 0 - sends you to runlevel 0, which is the "ok" prompt (OpenBoot PROM)
    # init 1 - sends you to single user mode, useful for installing patches.
  • guest
    You could use the Sun recommended shutdown command. :wink:

    shutdown -y -i5 -g0

    look up the man page, but the i option specifies run level, the g option grace period in seconds before the shutdown and the y options answer yes to the usual question of are you sure.
  • rangaswamybv
    I pressed Alt+F3 command prompt >> logged as admin >> given as poweroff command >> After next booting it is showing as >> Starting in powersave mode >> Its not able to boot the system >> Simply it reboots for 3 mins everytime >> The system is sun solaris and unix os
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