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kbled.sh
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#!/bin/bash
#AUTHOR: Ertugrul Yakin, https://ertugrulyakin.engineer
OPT=$1
freq=$2
rhb () {
while true
do
xset -led named "Scroll Lock"
sleep 0.15s
xset led named "Scroll Lock"
sleep 0.1s
xset -led named "Scroll Lock"
sleep 0.15s
xset led named "Scroll Lock"
sleep 1.5s
done
}
hb () {
while true
do
xset led named "Scroll Lock"
sleep 0.2s
xset -led named "Scroll Lock"
sleep 0.1s
xset led named "Scroll Lock"
sleep 0.2s
xset -led named "Scroll Lock"
sleep 1.5s
done
}
flash () {
frequency=`echo "scale=1; 1/10" | bc -l`
if [[ $# -eq 1 ]];
then
frequency=`echo "scale=1; $1/20" | bc -l`
fi
while true
do
xset -led named "Scroll Lock"
sleep $frequency
xset led named "Scroll Lock"
sleep $frequency
done
}
notice () {
while true
do
xset -led named "Scroll Lock"
sleep 2s
for ((i=0; i<20; i++))
do
xset led named "Scroll Lock"
sleep .05s
xset -led named "Scroll Lock"
sleep .05s
done
done
}
sine () {
while true
do
for ((i=41; i>1; i--))
do
sTime=`echo "scale=5; $i/200" | bc -l`
xset led named "Scroll Lock"
sleep $sTime
xset -led named "Scroll Lock"
sleep $sTime
done
for ((i=1; i<41; i++))
do
sTime=`echo "scale=5; $i/200" | bc -l`
xset led named "Scroll Lock"
sleep $sTime
xset -led named "Scroll Lock"
sleep $sTime
done
done
}
showHelp () {
echo -e "\n\033[38;5;75mUsage:\033[39m"
echo -e " * on\n * off\n * heartbeat || hb\n * reverseheartbeat || rhb\n * flash {speed, lowest is fastest}\n * notice || ntc\n * sine || sn"
echo -e "\033[38;5;75mEx:\033[39m"
echo " -> kbled on"
echo " -> kbled flash"
echo " -> kbled flash 5"
echo " -> kbled hb"
echo " -> kbled ntc"
}
if [[ "$OPT" == "heartbeat" ]] || [[ "$OPT" == "hb" ]]; then
hb
elif [[ "$OPT" == "sine" ]] || [[ "$OPT" == "sn" ]]; then
sine
elif [[ "$OPT" == "reverseheartbeat" ]] || [[ "$OPT" == "rhb" ]]; then
rhb
elif [[ "$OPT" == "flash" ]]; then
flash $2
elif [[ "$OPT" == "notice" ]] || [[ "$OPT" == "ntc" ]]; then
notice
elif [[ "$OPT" == "on" ]]; then
xset led named "Scroll Lock"
elif [[ "$OPT" == "off" ]] || [[ "$OPT" == "kill" ]]; then
xset -led named "Scroll Lock"
pkill -f "kbled"
elif [[ "$OPT" == "help" ]]; then
showHelp
else
showHelp
fi