The Kernel application has all the code necessary to run the Erlang runtime system: file servers, code servers, and so on.
The Kernel application is the first application started. It is mandatory in the sense that the minimal system based on Erlang/OTP consists of Kernel and STDLIB. Kernel contains the following functional areas:
- Start, stop, supervision, configuration, and distribution of applications
- Code loading
- Error logging
- Global name service
- Supervision of Erlang/OTP
- Communication with sockets
- Operating system interface
It is assumed that the reader is familiar with the Erlang programming language.