Corrected defects in iotimeout script.

iotimeout

@@ -1,28 +1,32 @@
 # timelimit watches standard out for a delay longer than the timeout w/o any output.
 # Example:
 #   make clean test | timeout 300
-procid=$$
 timelimit=$1
 touch tmp.out  # Set initial time in case never get any output
-while true
-do 
+(
+  while true
+  do 
+    if [ ! -f tmp.out ]; then break; fi
     lastline=$(date +%s -r tmp.out)
     currtime=$(date +%s)
     (( diff = currtime - lastline ))
     if [ $diff -gt 10 ]
     then
-        echo "Over $diff seconds w/o response."
+        echo "More than $diff seconds w/o any response."
     fi
     if [ $diff -gt $timelimit ]
     then
         echo "Exceeded maximim timout of ${timelimit} seconds w/o response."
 	kill -9 0
-	exit 1
     fi
     sleep 10
-done &
+  done
+) &
 while read -r line
 do
     echo "$line"
     touch tmp.out
 done
+rm tmp.out
+wait
+echo "iotimeout finished."