Erlc / Compile And Run Sequential Erlang Program
Compile And Run Sequential Erlang Program
Compile and run an Erlang program in sequence.
erlc <path/to/file1 path/to/file2 ...> && erl -noshell '{mymodule:myfunction(arguments)}, init:stop().'erlc <path/to/file1 path/to/file2 ...> && erl -noshell "`{mymodule:myfunction(arguments)`}, init:stop()."#!/bin/bash
# Compile And Run Sequential Erlang Program
erlc {{path/to/file1 path/to/file2 ...}} && erl -noshell '{{mymodule:myfunction(arguments)}}, init:stop().'When To Use
When testing Erlang modules requiring procedural compilation and execution.
Pro Tip
Use -W to enable warnings during compilation for better debugging.
Anatomy of Output
Understanding the result
Compiling files: file1.erl, file2.erl... Compilation Status Indicates the files being compiled.
Compilation successful: 0 error(s) Compilation Result Confirms success in compilation without errors.
Running function in module: mymodule with arguments {'arg1'} Execution Status Specifies the function being executed with arguments.
Power User Variants
Optimized versions
erlc -W file1.erl file2.erl && erl -noshell -s mymodule myfunction -s init stop Enable warnings during compilation and run function.
Troubleshooting
Common pitfalls
Error: Could not compile file1.erl: undefined function.
Solution: Check and define or correct the function used.
No such module: mymodule
Solution: Ensure correct module name and compilation.
Runtime error: bad argument.
Solution: Validate arguments being passed to the function.
Command Breakdown
What each part is doing
-
erlc - Base Command
- The executable that performs this operation. Here it runs Erlc before the shell applies any redirect operators.
-
<path/to/file1 path/to/file2 ...> - Input Files
- The file path or paths supplied to this command.
-
{mymodule:myfunction(arguments)} - mymodule:myfunction(arguments
- The value supplied for mymodule:myfunction(arguments.
-
-noshell - Command Option
- Tool-specific option used by this command invocation.
Alternative Approaches
Comparable commands in other tools
Alternative programming tools for the same job.