/usr/share/laptop-mode-tools/module-helpers/pm-hibernate is in laptop-mode-tools 1.60-1ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | #!/bin/sh
MEM=0;
DISK=0;
target=`basename $0 | cut -d '-' -f2`
case "$target" in
suspend) MEM=1 ;;
hibernate) DISK=1 ;;
*) echo "Unrecognized command"
exit 1 ;;
esac
# Sync buffers first.
sync;
# Freezer on preference
if [ x$MEM = x1 ]; then
echo "mem" > /sys/power/state
elif [ x$DISK = x1 ]; then
echo "disk" > /sys/power/state
else
## Nothing to do.
echo ;
fi
|