Merge branch 'master' of github.com:oschrenk/scripts

* 'master' of github.com:oschrenk/scripts:
  suspend_until: Sleep and wake up at specific time

suspend_until

@@ -0,0 +1,68 @@
+#!/bin/bash
+
+# Auto suspend and wake-up script, taken from
+#
+# http://askubuntu.com/questions/61708/automatically-sleep-and-wake-up-at-specific-times
+#
+# Puts the computer on standby and automatically wakes it up at specified time
+#
+# Written by Romke van der Meulen <redge.online@gmail.com>
+# Minor mods fossfreedom for AskUbuntu
+#
+# Takes a 24hour time HH:MM as its argument
+# Example:
+#
+#     suspend_until 9:30
+#     suspend_until 18:45
+#
+# You can create a root cron job that calls this script to execute at a
+# specific time in the evening and then awake in the morning:
+#
+#     sudo crontab -e
+#
+# Now enter something like to run the suspend script at 23:30:
+#
+#     30 23 * * * /home/myhomefolder/suspend_until 07:30
+
+# ------------------------------------------------------
+# Argument check
+if [ $# -lt 1 ]; then
+    echo "Usage: suspend_until HH:MM"
+    exit
+fi
+
+# Check whether specified time today or tomorrow
+DESIRED=$((`date +%s -d "$1"`))
+NOW=$((`date +%s`))
+if [ $DESIRED -lt $NOW ]; then
+    DESIRED=$((`date +%s -d "$1"` + 24*60*60))
+fi
+
+# Kill rtcwake if already running
+sudo killall rtcwake
+
+# Set RTC wakeup time
+# N.B. change "mem" for the suspend option
+# find this by "man rtcwake"
+sudo rtcwake -l -m mem -t $DESIRED &
+
+# feedback
+echo "Suspending..."
+
+# give rtcwake some time to make its stuff
+sleep 2
+
+# then suspend
+# N.B. dont usually require this bit
+#sudo pm-suspend
+
+# Any commands you want to launch after wakeup can be placed here
+# Remember: sudo may have expired by now
+
+# Wake up with monitor enabled N.B. change "on" for "off" if
+# you want the monitor to be disabled on wake
+xset dpms force on
+
+# and a fresh console
+clear
+echo "Good morning!"