2 files changed, 7 insertions, 1 deletions
diff --git a/sbodl b/sbodl
index 43eacde..42623c2 100755
--- a/sbodl
+++ b/sbodl
@@ -90,7 +90,11 @@ for dl in $DL; do
 
 	[ "$FORCEDL" = "yes" ] && rm -f "$FILE"
 
-	if [ -e "$FILE" ]; then
+	if [ -f "$FILE" -a ! -L "$FILE" ]; then
+		# file exists and is a regular file, cache it
+		mv -b "$FILE" "$CACHEDIR"
+		ln -s "$CACHEDIR/$FILE" "$FILE"
+	elif [ -e "$FILE" ]; then
 		# don't do anything
 		:
 	elif [ "$FORCEDL" != "yes" ] && [ -e "$CACHEDIR/$FILE" ]; then
diff --git a/sbrun b/sbrun
index 5dd2222..1eeeb73 100755
--- a/sbrun
+++ b/sbrun
@@ -29,6 +29,8 @@ if [ "$(id -u)" != "0" ]; then
 		"$0" "$@"
 fi
 
+[ -e "$BUILDLOG" ] && mv "$BUILDLOG" "$BUILDLOG".old
+
 # Inherit MAKEFLAGS from env, if present.
 MAKEFLAGS="${MAKEFLAGS:-$DEFAULT_MAKEFLAGS}"