diff --git a/VERSION b/VERSION
index ceab6e11ece0bcec917c12e11d350946f085d549..0c62199f16ac1e2d7f7ae75b420c1231325dff4e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1
\ No newline at end of file
+0.2.1
diff --git a/libldevice.spec b/libldevice.spec
index 91d17461db2517750eaf656ff7c9d53133d99b9d..b75c9657b88d788cc6558aaf960f1add20ad4ddc 100644
--- a/libldevice.spec
+++ b/libldevice.spec
@@ -1,13 +1,14 @@
 Name: libldevice
-Version: 0.1
+Version: 0.2.1
 Release: 1%{?dist}
 Summary: A library that collecting device infomation
 
 License: LGPL v3
-URL: https://www.opencloudos.org 
-Source0: %{name}-%{version}.tar.xz
+URL: https://gitee.com/OpenCloudOS/libldevice
+Source0: https://gitee.com/OpenCloudOS/libldevice/archive/refs/tags/%{name}-%{version}.tar.gz
 
 # Dependencies
+BuildRequires: meson
 BuildRequires: openssl-devel
 BuildRequires: libcurl-devel
 BuildRequires: systemd-devel
@@ -69,6 +70,7 @@ fi
 %files
 %license LICENSE
 %doc README
+%{_bindir}/ldevice
 %{_libdir}/libldevice.so.0
 /usr/lib/license/libsystemactivation.so
 %{_unitdir}/libldevice.service
diff --git a/meson.build b/meson.build
index c3d98cd4eae02c383d6c22fbc6fd68cabe6ef286..61b3a99b8ba73fb164a3dfa11f96bb3e87e443f7 100644
--- a/meson.build
+++ b/meson.build
@@ -1,21 +1,31 @@
-project('libldevice', 'c', version: '0.1')
+project('libldevice', 'c', version: '0.2.1', license: 'LGPL V3')
 
 # Use dependency function to check for libraries
 libcrypto_dep = dependency('openssl', modules: 'crypto', required: true)
 libcurl_dep = dependency('libcurl', required: true)
 libudev_dep = dependency('libudev', required: true)
 
-# Specify your source code files
-src = files('ldevice.c')  
+src_dir = 'src'
+inc_dir = include_directories(src_dir)
 
 # Specify shared_library
-mylib = shared_library(
-    'ldevice', 
-    src, 
+libldevice = shared_library(
+    'ldevice',
+    sources: ['src/ldevice.c'],
+    include_directories: [inc_dir],
     dependencies: [libcrypto_dep, libcurl_dep, libudev_dep],
     version: '0',
-    install: true,   # this makes Meson install the library
+    install: true
+)
+
+# Specify executable program
+executable(
+    'ldevice',
+    sources: ['src/main.c'],
+    include_directories: [inc_dir],
+    link_with: libldevice,
+    install: true
 )
 
 # Add installation instruction for header file
-install_headers('ldevice.h')  # This will install headers to /usr/local/include
+install_headers('src/ldevice.h')
diff --git a/ldevice.c b/src/ldevice.c
similarity index 100%
rename from ldevice.c
rename to src/ldevice.c
diff --git a/ldevice.h b/src/ldevice.h
similarity index 93%
rename from ldevice.h
rename to src/ldevice.h
index 080455c7ce50782f9503247466ee8369aed668c4..6f995f8fe406051c02df763050c04bc7c76dea87 100644
--- a/ldevice.h
+++ b/src/ldevice.h
@@ -16,6 +16,8 @@
  * You should have received a copy of the GNU Lesser General Public  License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
+#ifndef LDEVICE_H
+#define LDEVICE_H
 
 /*
  * get Linux distribution type, like "OpenCloudOS"
@@ -62,6 +64,11 @@ const char* system_get_cpu();
 const char* system_get_mac();
 
 
+/*
+ * get blkid of filesystem
+*/
+const char* system_get_blkid();
+
 /*
  * get the disk's uuid
  * if there are more than 1 disk, only get the disk
@@ -73,3 +80,5 @@ const char* system_get_disk_uuid();
  * get the license token
  */
 const char* system_get_token();
+
+#endif
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000000000000000000000000000000000000..ec2fa8fc8ca10411c376bcd1538257be4d839f84
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include "ldevice.h"
+
+int main() {
+    int tag = system_get_tag();
+
+    const char *name = system_get_name();
+
+    int active = system_is_active();
+
+    const char* osversion = system_get_osversion();
+
+    const char* uuid = system_get_uuid();
+
+    const char* cpu = system_get_cpu();
+
+    const char* mac = system_get_mac();
+
+    const char* blkid = system_get_blkid();
+
+    const char* disk = system_get_disk_uuid();
+
+    const char* token = system_get_token();
+
+    printf("tag: %d\nname: %s\nactive: %d\nosversion: %s\nuuid: %s\ncpu: %s\nmac: %s\nblkid: %s\ndisk: %s\ntoken: %s\n", tag, name, active, osversion, uuid, cpu, mac, blkid, disk, token);
+
+    return 0;
+}
\ No newline at end of file
diff --git a/test.c b/src/test.c
similarity index 100%
rename from test.c
rename to src/test.c