Each Linux server has a diretcory named /tmp which is installed with individual file system. it is used to hold temporary files. /tmp directory have all the all the website session files which is hosted on serve.
What does CGI mean? CGI stands for Common Gateway Interface . This is a standard way for webhosting servers to interface executable scripts with end users. Most of the hosts does not allow to execute those scripts outside the CGI-BIN folder.
MongoDB is a non-sql database server. The default installation provides you the access of database using command line without authentication. In this tutorial I will show how to create users in Mongodb server with proper authentications.
Swap is very useful for those systems which required more RAM If memory is full services got crashed due to insufficient memory. In this situation system required more RAM to run applications properly as it check for swap space and transfer files there.