# astyle > Source code indenter, formatter, and beautifier for the C, C++, C# and Java programming languages. > Upon running, a copy of the original file is created with an ".orig" appended to the original file name. - Apply the default style of 4 spaces per indent and no formatting changes: `astyle {{source_file}}` - Apply the java style with attached braces: `astyle --style=java {{path/to/file}}` - Apply the allman style with broken braces: `astyle --style=allman {{path/to/file}}` - Apply a custom indent using spaces. Choose between 2 and 20 spaces: `astyle --indent=spaces={{number_of_spaces}} {{path/to/file}}` - Apply a custom indent using tabs. Choose between 2 and 20 tabs: `astyle --indent=tab={{number_of_tabs}} {{path/to/file}}`