attempting to fix blank erroring out of webONline.bash

webOnline.bash

@@ -4,11 +4,17 @@ START=$(date +%s.%N)
 
 arg1=${1:-''}
 
+TH=20
+
 if [[ $arg1 == '--help' || $arg1 == '-h' ]]; then
-    echo "Script author should have provided documentation"
+    echo "Usage: $0 [\$thresholdTimeoutSeconds]"
+    echo "The first argument is the timeout in seconds.  Defaults to ${TH} seconds"
     exit 0
 fi
 
+TH=${1:-20}
+
+
 #exit when command fails (use || true when a command can fail)
 set -o errexit
 
@@ -89,13 +95,12 @@ fi
 
 for page in `cat $configFile | sort | uniq | sort -R `; do
 	START=$(date +%s.%N)
-	TH=20
     connect=false
     attempts=0
     set -x
     while  [ $attempts -lt 3 ] &&  ! $connect  ; do
 		if ! curl -k -I -fs --max-time $TH $page > /dev/null ; then
-	        let "attempts++"
+	        let "attempts++" || true
 	    else
 	        connect=true
 	    fi