diff --git a/fri/server/main.py b/fri/server/main.py
index 203a94d..fe16633 100644
--- a/fri/server/main.py
+++ b/fri/server/main.py
@@ -70,37 +70,47 @@ def build(dir):
     makestudy_dir = dirname + "/" + graphml_file   #for makestudy
     dir_path = os.path.abspath(os.path.join(concore_path, graphml_file)) #path for ./build
     if not os.path.exists(dir_path):
-        proc = call(["./makestudy", makestudy_dir], cwd=concore_path)
+        proc = call(["makestudy", makestudy_dir],shell=True, cwd=concore_path)
         if(proc == 0):
             resp = jsonify({'message': 'Directory successfully created'})
             resp.status_code = 201
         else:
             resp = jsonify({'message': 'There is an Error'})
             resp.status_code = 500        
-    call(["./build"], cwd=dir_path)   
+    else:
+        resp= jsonify({"message":"Success"})
+        resp.status_code=200
+    call(["build"],shell=True, cwd=dir_path)   
     return resp 
 
 
+# Give the directory of the build files that are build using ./build
 @app.route('/debug/<dir>', methods=['POST'])
 def debug(dir):
     dir = secure_filename(dir)
     dir_path = os.path.abspath(os.path.join(concore_path, dir))
-    proc = call(["./debug"], cwd=dir_path)
-    if(proc == 0):
-        resp = jsonify({'message': 'Close the pop window after obtaining result'})
-        resp.status_code = 201
-        return resp
+    if not os.path.exists(dir_path):
+        resp=jsonify({"message":"Wrong directory given"})
+        resp.status_code=500
     else:
-        resp = jsonify({'message': 'There is an Error'})
-        resp.status_code = 500
-        return resp  
+        proc = call(["debug"],shell=True , cwd=dir_path)
+        if(proc == 0):
+            resp = jsonify({'message': 'Close the pop window after obtaining result'})
+            resp.status_code = 201
+            return resp
+        else:
+            resp = jsonify({'message': 'There is an Error'})
+            resp.status_code = 500
+    return resp  
 
 
+# Give the directory of the build files that are build using ./build
 @app.route('/run/<dir>', methods=['POST'])
 def run(dir):
     dir = secure_filename(dir)
     dir_path = os.path.abspath(os.path.join(concore_path, dir))
-    proc = call(["./run"], cwd=dir_path)
+    print(dir_path)
+    proc = call(["run"],shell=True, cwd=dir_path)
     if(proc == 0):
         resp = jsonify({'message': 'result prepared'})
         resp.status_code = 201
@@ -110,11 +120,12 @@ def run(dir):
         resp.status_code = 500
         return resp
 
+# Give the directory of the build files that are build using ./build
 @app.route('/stop/<dir>', methods=['POST'])
 def stop(dir):
     dir = secure_filename(dir)
     dir_path = os.path.abspath(os.path.join(concore_path, dir))
-    proc = call(["./stop"], cwd=dir_path)
+    proc = call(["stop"],shell=True, cwd=dir_path)
     if(proc == 0):
         resp = jsonify({'message': 'resources cleaned'})
         resp.status_code = 201
@@ -129,7 +140,7 @@ def stop(dir):
 def clear(dir):
     dir = secure_filename(dir)
     dir_path = os.path.abspath(os.path.join(concore_path, dir))
-    proc = call(["./clear"], cwd=dir_path)
+    proc = call(["clear"],shell=True, cwd=dir_path)
     if(proc == 0):
         resp = jsonify({'message': 'result deleted'})
         resp.status_code = 201
@@ -161,7 +172,7 @@ def download(dir):
 @app.route('/destroy/<dir>', methods=['DELETE'])
 def destroy(dir):
     dir = secure_filename(dir)
-    proc = call(["./destroy", dir], cwd=concore_path)
+    proc = call(["destroy", dir],shell=True, cwd=concore_path)
     if(proc == 0):
         resp = jsonify({'message': 'Successfuly deleted Dirctory'})
         resp.status_code = 201
@@ -182,7 +193,7 @@ def getFilesList(dir):
     return res             
 
 
-@app.route('/openJupyter/', methods=['POST'])
+@app.route('/openJupyter', methods=['POST'])
 def openJupyter():
     proc = subprocess.Popen(['jupyter', 'lab'], shell=False, stdout=subprocess.PIPE, cwd=concore_path)
     if  proc.poll() is None: