Made changes as per tlimoncelli

bin/blackbox_cat

@@ -7,8 +7,14 @@ set -e
 . _blackbox_common.sh
 
 for param in """$@""" ; do
+  shreddable=0
   unencrypted_file=$(get_unencrypted_filename "$param")
+  if [[ ! -e "$unencrypted_file" ]]; then
     blackbox_edit_start "$param"
-  cat $unencrypted_file
+    shreddable=1
+  fi
+  cat "$unencrypted_file"
+  if [[ $shreddable = 1 ]]; then
     shred_file "$unencrypted_file"
+  fi
 done