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Power management

root@roadrunner:/sys/power# cat state
freeze standby mem
root@roadrunner:/sys/power# echo "freeze" > state
[ 1043.490000] PM: Syncing filesystems ... done.
[ 1043.510000] Freezing user space processes ... (elapsed 0.005 seconds) done.
[ 1043.520000] Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done.
[ 1043.530000] Suspending console(s) (use no_console_suspend to debug)

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