Update lines correctly

registry/scripts/registry.sh

@@ -39,7 +39,7 @@ else
             LINES="$LINES\n$(date +%Y%m%d) $(echo $line | cut -d ' ' -f 2-)"
         fi
     done < $conf_file
-    echo $LINES > $conf_file
+    echo -e $LINES > $conf_file
 fi
 
 while true
@@ -47,7 +47,16 @@ do
     line=`netcat -l $IP $port`
     if [ $(echo "$line" | egrep -c "^([0-9a-f]{2}:?){6} .*$") -eq 1 ]
     then
-        echo "$(date +%Y%m%d) $line" >> $conf_file
+        date=$(date +%Y%m%d)
+        res=$(grep "$line" $conf_file)
+        if [ ! -z "$res" ]
+        then
+            # Update
+            sed -i -e "s/^.*$line$/$date $line/" $conf_file
+        else
+            # Add
+            echo "$date $line" >> $conf_file
+        fi
     fi
 done