Fix help message generation in backup scripts allowing 0 parameter allowing scripts to accept '$' to show the help message.

backup-image/list.sh

@@ -1,5 +1,5 @@
 #/bin/bash
-if [ $# -eq 0 ]; then
+if [[ "$1" != '$' ]]; then
     echo "Usage: list.sh [Storage disk root path]";
     exit 2;
 fi

backup-image/verify-all.sh

@@ -1,6 +1,6 @@
 #/bin/bash
 echo "Verify All Backups!";
-if [ $# -eq 0 ]; then
+if [[ "$1" != '$' ]]; then
     echo "Usage: verify-all.sh [Storage disk root path]";
     exit 2;
 fi