diff --git a/chsrc.c b/chsrc.c
index 37de29e..426383f 100644
--- a/chsrc.c
+++ b/chsrc.c
@@ -128,7 +128,7 @@ static const char const
   pl_rust, pl_go,     pl_dotnet, pl_maven, pl_gradle, pl_julia
 },
 **os_packagers[] = {
-  os_ubuntu,
+  os_ubuntu
 };
 // static const char const
 // *os_ubuntu[] = {"ubuntu", NULL,  cmdfunc(os_ubuntu_chsrc)};
@@ -204,6 +204,26 @@ main (int argc, char const *argv[])
     const char const** packager = pl_packagers[i];
     int k = 0;
     const char* alias = packager[k];
+    while (NULL!=alias) {
+      printf("%s matched: %s\n",target, alias);
+      if (0==strcmp(target, alias)) {
+        // printf("matched: %s\n", alias);
+        matched = 1; break;
+      }
+      k++;
+      alias = packager[k];
+    }
+    if (matched) {
+      do {
+        k++; alias = packager[k];
+      } while (NULL!=alias);
+      call_cmd ((void*) packager[k+1], cmdarg);
+    }
+  }
+  for (int i=0; i<Array_Size(os_packagers); i++) {
+    const char const** packager = os_packagers[i];
+    int k = 0;
+    const char* alias = packager[k];
     while (NULL!=alias) {
       // printf("%s matched: %s\n",target, alias);
       if (0==strcmp(target, alias)) {
diff --git a/chsrc.h b/chsrc.h
index 5193b99..a4c25cf 100644
--- a/chsrc.h
+++ b/chsrc.h
@@ -56,9 +56,9 @@ pl_ruby_sources[] = {
 
 static source_info
 pl_ubuntu_sources[] = {
+  {&Ali,       "https://mirrors.aliyun.com/ubuntu/"},
   {&Bfsu,      "https://mirrors.bfsu.edu.cn/ubuntu/"},
   {&Ustc,      "https://mirrors.ustc.edu.cn/ubuntu/"},
-  {&Ali,       "https://mirrors.aliyun.com/ubuntu/"},
   {&Tuna,      "https://mirrors.tuna.tsinghua.edu.cn/ubuntu/"},
   {&Tencent,   "https://mirrors.tencent.com/ubuntu/"},
   {&Wy,        "https://mirrors.163.com/ubuntu/"},
diff --git a/target b/target
deleted file mode 100755
index d0667eb..0000000
Binary files a/target and /dev/null differ