diff --git a/CMakeLists.txt b/CMakeLists.txt
index 892d420..3e73c2b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,11 +54,13 @@ target_link_libraries(${APP_NAME}
 
 # 拷贝配置文件（仅在不存在时）
 add_custom_command(TARGET ${APP_NAME} POST_BUILD
-    COMMAND sh -c
-    "test -f \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\" || \
-     (mkdir -p \"$<TARGET_FILE_DIR:${APP_NAME}>\" && \
-      cp \"${CMAKE_SOURCE_DIR}/${CONFIG_EXAMPLE_FILE}\" \
-         \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\" && \
-      echo \"config.json created from example\")"
+    COMMAND /bin/bash -c
+    "if [ ! -f \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\" ]; then \
+        mkdir -p \"$<TARGET_FILE_DIR:${APP_NAME}>\" && \
+        cp \"${CMAKE_SOURCE_DIR}/${CONFIG_EXAMPLE_FILE}\" \
+           \"$<TARGET_FILE_DIR:${APP_NAME}>/${CONFIG_FILE}\" && \
+        echo \"config.json created from example\"; \
+     else \
+        echo \"config.json exists, keep it\"; \
+     fi"
 )
-