File Name (DOS) generator

Last modified: April 3, 2025

The File Name (DOS) generator creates file names that adhere to the 8.3 filename convention used in DOS-based systems. It generates values consisting of a filename (up to 8 characters) and a file extension (3 characters), separated by a period. The filenames typically include uppercase letters (A-Z) and digits (0-9), reflecting the alphanumeric constraints of DOS file systems. This generator is particularly useful for testing legacy systems or applications that handle DOS-style file names.

Generator properties

The table provides key details about the generator, including the short name, sample of the generated data, the supported data types, and whether it is specific to a particular country.

Short name	Example of generated data	Data type matching	Country-specific
File Name (DOS)	U9.SYS, MJY7.COM, KA.BAK, POS2.EXE, V7G8C.SYS, …	character varyingcharactertext	Default

Matching rules

The generator can be assigned to a column whose name is ‘Filename’, regardless of the table name.

Configure additional settings

The generator produces data based on a regular expression. Since it is built on the RegExp generator, see Regular Expression generator to customize settings and understand the correct usage of syntax.