Regular expression in table

Question

I want to print a regular expression in table's column. For example:

\begin{table}[position specifier]
\begin{center}
    \begin{tabular}{ c | c }
        \hline
        comand & regex \\ 
        \hline
        HELO & ^\s*HELO\s+(\S+)\s*$ \\
        \hline
    \end{tabular}
    \label{tab:smtp}
\end{center}
\end{table}

But, I have a lot of errors due to ^\s*HELO\s+(\S+)\s*$. So, what does the simplest way to escape this regex?

EDIT:

I do not have enough reputation to ask to my own question. So the most suitable solution is to use \verb comand.

Answer 1

From the comments and this question on stackoverflow, a solution is to use \verb, for example this way :

\verb!^\s*HELO\s+(\S+)\s*$!