Flex is a free implementation of lexx.
4.10.1. UNIX or Win32 Cygwin: flex
Flex is available for most of the UNIX-like platforms
and as the flex package from the
If GNU flex isn't already installed or
available as a package for your platform, you can get it at:
After correct installation, typing at the
bash command line prompt:
should result in something like:
flex version 2.5.4
However, the version string may vary.