Chapter 6. Files and I/O

Elixir Chapter 6.
Files and I/O

Checking if a directory exists

Elixir’s standard library offers a straightforward way to check for the existence of a directory through the File module.

Creating a temporary file

In Elixir, you can create and use a temporary file with the System.tmp_dir/1 function and File module.

Reading a text file

Here’s how to read the entire contents of a text file named example.txt.

Reading command line arguments

In Elixir, grabbing command line arguments is a no-brainer.

Writing a text file

Elixir makes file handling straightforward with built-in modules.

Writing to standard error

In Elixir, you can use IO module functions such as IO.puts/2 and IO.warn/2 to write messages to standard error.