Between the Ctrl-C's

The article explores the BREAK menu feature within the Elixir REPL, IEx, which is part of the Erlang Virtual Machine (BEAM) and allows users to interact with a running Elixir session. It details how pressing Ctrl-C twice in IEx brings up the BREAK menu, providing options such as aborting the session, obtaining crash dumps, continuing the session, and retrieving various system information. These options are also available when running other Erlang applications and shells. The menu's commands, like checking memory usage, listing processes or open ports, and killing processes, are particularly useful for debugging and managing Elixir/Erlang applications, especially when more advanced tools are unavailable. The article offers insight into the implementation and purpose of each command, emphasizing the utility of the BREAK menu for maintaining and troubleshooting applications running on the BEAM.

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