executing lex programs

Do you mean the tool for lexical analysis? If so, the free equivalent is "flex". For yacc, there is "bison".

The Ubuntu version of "lex" is called "flex".
You need to install the package first.
Once you install, use the program "flex" wherever you are expected to use "lex".

To install "flex", click on System/Administration/Synaptic Package Manager,
then do a search for the package "flex". Select the package to install it, then click Apply to commit the changes.

thanks a lot :)i've installed flex now:)

On 10/2/07, Simos Xenitellis <email address hidden> wrote:
> Your question #14382 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/14382
>
> Status: Needs information => Answered
>
> Simos Xenitellis proposed the following answer:
> The Ubuntu version of "lex" is called "flex".
> You need to install the package first.
> Once you install, use the program "flex" wherever you are expected to use "lex".
>
> To install "flex", click on System/Administration/Synaptic Package Manager,
> then do a search for the package "flex". Select the package to install it, then click Apply to commit the changes.
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
> https://answers.launchpad.net/ubuntu/+question/14382/+confirm?answer_id=1
>
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/ubuntu/+question/14382
>
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>

That is great. You can mark then this question as "Solved".

Visit the URL
https://answers.launchpad.net/ubuntu/+question/14382
to do so.