- avoid 2nd copy of agent

run_agent.sh

@@ -3,6 +3,12 @@
 # Oneliner to find script's directory. Please note - last path component should NOT be symlink.
 SCRIPT_DIR="$( cd -- "$( dirname -- "${BASH_SOURCE[0]:-$0}"; )" &> /dev/null && pwd 2> /dev/null; )";
 
+for pid in $(pidof -x run_agent.sh); do
+    if [ $pid != $$ ]; then
+        echo "[$(date)] : run_agent.sh : Process is already running with PID $pid. Exiting."
+        exit 1
+    fi
+done
 
 while :
 do