shred instead of rm

vim/vimcrypted

@@ -18,6 +18,8 @@ Changed file is always backed up as .old
 }
 [[ -z "$1" ]] && helpexit
 [[ "$1" = "-h" ]] && helpexit
+RM=rm
+which shred &> /dev/null && RM="shred -u"
 set -x
 if [[ ! "$1" == *\.gpg ]]
 then 
@@ -40,7 +42,7 @@ edit=`date +%s -r $unc`
 if [ -s "$unc" ]
 then vim -i NONE -n "$unc"    
 else echo Error in decrypting
-     rm "$unc"
+     $RM "$unc"
      exit 1
 fi
 
@@ -54,4 +56,4 @@ then
          mv -f "$1".tmp "$1"
     fi
 fi
-rm "$unc"
+$RM "$unc"