ddstatus.sh: re-check dd each loop so it exits when dd finishes

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ddstatus.sh

@@ -6,22 +6,20 @@ PID=$(pidof dd)
 
 main(){
 
+  if [ -z "${PID}" ];then
+    echo "DD is not running"
+    exit 0;
+  fi
+
   while true;do
     clear
-    if [ ! ${PID} ];then
+    PID=$(pidof dd)
-      echo "DD is not running"
+    if [ -z "${PID}" ];then
-      exit 0;
+      echo "dd is no longer running"
-    elif [[ ${PID} ]];then
-      kill -USR1 ${PID} > /dev/null
-      sleep 1
-      if [[ ! ${PID} ]];then
-        echo "dd it no longer running"
-        exit 0;
-      fi
-    else
-      echo "There was an unknown error, exiting..."
       exit 0;
     fi
+    kill -USR1 ${PID} > /dev/null 2>&1
+    sleep 1
   done
 }