I have try to install magento CE Version 1.9.3.8.But when i am trying to install magento from browser.it show permission issue :

Path "/var/www/html/magento/media" must be writable.
Path "/var/www/html/magento/media/downloadable" must be writable.
Path "/var/www/html/magento/media/xmlconnect" must be writable.
Path "/var/www/html/magento/media/xmlconnect/system" must be writable.
Path "/var/www/html/magento/media/xmlconnect/system/ok.gif" must be writable.
Path "/var/www/html/magento/media/xmlconnect/custom" must be writable.
Path "/var/www/html/magento/media/xmlconnect/custom/ok.gif" must be writable.
Path "/var/www/html/magento/media/xmlconnect/original" must be writable.
Path "/var/www/html/magento/media/xmlconnect/original/ok.gif" must be writable.
Path "/var/www/html/magento/media/dhl" must be writable.
Path "/var/www/html/magento/media/dhl/logo.jpg" must be writable.
Path "/var/www/html/magento/media/customer" must be writable.

设置文件夹的权限即可：

chmod -R 777 /var/www/html/magento/media
chmod -R 777 /var/www/html/magento/var