上传到Linux服务器后，Codigniter无法正常工作

Created an application using Codeginiter and is working fine with my local environment which is in XAMPP. After uploading application folders and files to linux server application is not working at all. Deployed complete files under "/var/www/html/" and when access from browser it gives me CI error as "404 Page Not Found".Created an application using Codeginiter and is