minor improvements and readme

README.md

@@ -1,3 +1,33 @@
 # kb-layout-caps-led
 
-Switching on and off capslock led according to the keyboard layout
+> Switching on and off capslock led according to the keyboard layout
+
+This project is againts to show your keyboard layout switching with CapsLock LED indicator.
+
+## Installation
+
+There are two systemd daemons: one is running from user, the other one as root.
+
+### User's daemon is against of to determine the current keyboard layout and tell it to root's daemon
+
+```bash
+> systemctl --user enable /%FULL_PATH_TO%/daemons/gnome-kb-layout-watcher.service
+```
+
+```bash
+> systemctl --user start gnome-kb-layout-watcher.service
+```
+
+### Root's daemon is against of to set up the CapsLock LED indicator according of user's daemon data
+
+```bash
+> sudo cp /%FULL_PATH_TO/daemons/kb-layout-signal-watcher.service /etc/systemd/system/kb-layout-signal-watcher.service
+```
+
+```bash
+> sudo systemctl enable kb-layout-signal-watcher.service
+```
+
+```bash
+> sudo start kb-layout-signal-watcher.service
+```

scripts/gnome-kb-layout-watcher.sh

@@ -4,14 +4,19 @@ echo $$ > /tmp/gnome-kb-layout-watcher.pid
 
 MAIN_KB_LAYOUT=$(gsettings get org.gnome.desktop.input-sources sources | sed -e 's!\[!!g; s!\]!!g; s!), (!,!g; s!(!!; s!)!!g; s! !!g;' | awk -F, '{print $2}' | sed "s/'//g")
 
+LAST_KB_LAYOUT=''
+
 while :
 do
     CURRENT_KB_LAYOUT=$(gsettings get org.gnome.desktop.input-sources mru-sources | sed -e 's!\[!!g; s!\]!!g; s!), (!,!g; s!(!!; s!)!!g; s! !!g;' | awk -F, '{print $2}' | sed "s/'//g")
 
-    if [[ "$CURRENT_KB_LAYOUT" == "$MAIN_KB_LAYOUT" ]]; then
-        echo "1" > /tmp/kb-layout
-    else
-        echo "0" > /tmp/kb-layout
+    if ! [[ "$LAST_KB_LAYOUT" == "$CURRENT_KB_LAYOUT" ]]; then
+        if [[ "$CURRENT_KB_LAYOUT" == "$MAIN_KB_LAYOUT" ]]; then
+            echo "1" > /tmp/kb-layout
+        else
+            echo "0" > /tmp/kb-layout
+        fi
+        LAST_KB_LAYOUT="$CURRENT_KB_LAYOUT"
     fi
 
     sleep .1

scripts/kb-layout-signal-watcher.sh

@@ -6,21 +6,21 @@ CAPS_INPUT=$(ls /sys/class/leds/ | grep caps | head -n 1)
 
 echo $CAPS_INPUT
 
-PREVIOUS_KB_LAYOUT=""
+LAST_KB_LAYOUT=""
 
 while :
 do
     CURRENT_KB_LAYOUT=$(cat /tmp/kb-layout)
 
-    if ! [[ "$PREVIOUS_KB_LAYOUT" == "$CURRENT_KB_LAYOUT" ]]; then
+    if ! [[ "$LAST_KB_LAYOUT" == "$CURRENT_KB_LAYOUT" ]]; then
         if [[ "$CURRENT_KB_LAYOUT" == "1" ]]; then
-            echo 0
+            #echo 0
             echo 0 | sudo tee "/sys/class/leds/$CAPS_INPUT/brightness"
         else
-            echo 1
+            #echo 1
             echo 1 | sudo tee "/sys/class/leds/$CAPS_INPUT/brightness"
         fi
-        PREVIOUS_KB_LAYOUT="$CURRENT_KB_LAYOUT"
+        LAST_KB_LAYOUT="$CURRENT_KB_LAYOUT"
     fi
 
     sleep .1