Creare uno script avviabile con il seguente contenuto e gestirlo via crontab
Code:
#!/bin/bash -e
# /root/raspy-hdmi
# Script to enable and disable the HDMI signal of the Raspberry PI
# Inspiration: http://www.raspberrypi.org/forums/viewtopic.php?t=16472&p=176258
CMD="$1"
function on {
/opt/vc/bin/tvservice --preferred
# Hack to enable virtual terminal nr 7 again:
chvt 6
chvt 7
}
function off {
/opt/vc/bin/tvservice --off
}
function must_be_root {
if [ $USER != root ]; then
echo "ERROR: Script must be executed as the root user"
exit 1
fi
}
function main {
must_be_root
if [ "$CMD" == "on" ]; then
on
elif [ "$CMD" == "off" ]; then
off
else
echo "Usage: $0 <on|off>"
exit 1
fi
exit 0
}
main
Code:
# Enable the monitor every weekday morning at 7:30
30 7 * * 1,2,3,4,5 /root/raspy-hdmi on > /dev/null 2>&1
# Disable the monitor every weekday evening at 18:30
30 18 * * 1,2,3,4,5 /root/raspy-hdmi off > /dev/null 2>&1
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