--- a/atop.daily	2021-10-11 10:06:37.318316573 -0400
+++ b/atop.daily	2021-10-11 10:10:51.593483875 -0400
@@ -30,13 +30,18 @@
 
 # verify if atop still runs for daily logging
 #
-if [ -e "$PIDFILE" ] && ps -p `cat "$PIDFILE"` | grep 'atop$' > /dev/null
+pid=
+if [ -e $PIDFILE ]; then
+	pid=$(cat $PIDFILE)
+fi
+
+if [ -n "$pid" ] && [ -d /proc/$pid ]
 then
-	kill -USR2 `cat "$PIDFILE"`       # final sample and terminate
+	kill -USR2 $pid       # final sample and terminate
 
 	CNT=0
 
-	while ps -p `cat "$PIDFILE"` > /dev/null
+	while [ -d /proc/$pid ]
 	do
 		CNT=$((CNT + 1))