# flex

> Lexical analyser generator. Based on `lex`.
> Given the specification for a lexical analyser, generates C code implementing it.

- Generate an analyser from a flex file:

`flex {{analyser.l}}`

- Specify the output file:

`flex {{analyser.l}} --outfile {{analyser.c}}`

- Compile a C file generated by flex:

`cc {{path/to/lex.yy.c}} --output {{executable}}`
