diff --git a/core/cli.py b/core/cli.py
index 3ba5e4a..f8fce50 100644
--- a/core/cli.py
+++ b/core/cli.py
@@ -11,7 +11,7 @@ import traffic
 import validator
 
 
-SCRIPT_DIR = 'scripts'
+SCRIPT_DIR = '/etc/hysteria/core/scripts'
 DEBUG = True
 
 class Command(Enum):
@@ -39,7 +39,7 @@ def run_cmd(command:list[str]):
     Runs a command and returns the output.
     Could raise subprocess.CalledProcessError
     '''
-    result = subprocess.check_output(command, shell=True)
+    result = subprocess.check_output(command, shell=False)
     if DEBUG:
         print(result.decode().strip())
 
@@ -48,7 +48,7 @@ def generate_password() -> str:
     Generates a random password using pwgen for user.
     Could raise subprocess.CalledProcessError
     '''
-    return subprocess.check_output(['pwgen', '-s', '32', '1'], shell=True).decode().strip()
+    return subprocess.check_output(['pwgen', '-s', '32', '1'], shell=False).decode().strip()
 
 # endregion
 
@@ -61,6 +61,7 @@ def cli():
 @cli.command('install-hysteria2')
 @click.option('--port','-p', required=True, help='New port for Hysteria2',type=int,callback=validator.validate_port)
 def install_hysteria2(port:int):
+    print(f"bash {Command.INSTALL_HYSTERIA2.value} {str(port)}")
     run_cmd(['bash', Command.INSTALL_HYSTERIA2.value, str(port)])
     
 
diff --git a/core/validator.py b/core/validator.py
index bd4f8b0..04c09a2 100644
--- a/core/validator.py
+++ b/core/validator.py
@@ -1,10 +1,10 @@
 import os
+import click
 
-
-def validate_port(ctx,param,value)-> bool:
+def validate_port(ctx,param,value:int) -> int:
     if value < 1 or value > 65535:
-        return False
+        raise click.BadParameter('Port must be between 1 and 65535')
     # check if port is in use
     if os.system(f'lsof -i:{value}') == 0:
-        return False
-    return True
\ No newline at end of file
+        raise click.BadParameter(f'Port {value} is in use')
+    return value
\ No newline at end of file