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-rwxr-xr-xdemo/clean.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/demo/clean.sh b/demo/clean.sh
index 6b809f6e83..99482e87d3 100755
--- a/demo/clean.sh
+++ b/demo/clean.sh
@@ -12,8 +12,8 @@ if [ -f $PID_FILE ]; then
 fi
 
 for port in 8080 8081 8082; do
-    rm -rf $DIR/$port
+    rm -rf ${DIR:?}/$port
     rm -rf $DIR/media_store.$port
 done
 
-rm -rf $DIR/etc
+rm -rf ${DIR:?}/etc