erl:tldr:d37ca

The command "erl -pa ${directory_with_beam_files}" is used to start the Erlang shell with additional paths specified by the directory containing the Erlang beam files.

Here's the breakdown of the command:

• "erl" is the executable command to start the Erlang interactive shell.
• "-pa" is a command-line option that specifies additional paths to search for Erlang beam files.
• "${directory_with_beam_files}" is a placeholder representing the actual directory path where the Erlang beam files are located.

When this command is executed, the Erlang shell starts with the additional paths specified by the directory containing the beam files. This allows the shell to find and load any Erlang modules contained in those files during runtime.

By specifying the directory path with the "-pa" option, it ensures that the Erlang shell knows where to look for the beam files and can properly import and execute the code defined in those modules.