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<center><h1>The <em>runhs</em> script interpreter</h1></center>


<hr>
<p>
<em>Runhs</em> is a tiny Haskell <tt>#!</tt> 'interpreter'
for source scripts.  That is, if your source file starts with
<tt>#!/path/to/runhs</tt>, you can execute it directly from your
shell prompt.
<p>
Underneath, it uses <em><a href="index.html">hmake</a></em> to build
a temporary copy of the program with your default Haskell compiler,
then executes it.  The temporary copy is cached, so later executions
will be faster if the script remains unchanged.

<center><h3><a name="use">Usage</a></h3></center>
<p>
The basic option summary is:
<pre>
    Usage: runhs [-e] file [args...]
</pre>

The <tt>-e</tt> option does nothing - it it purely for compatibility
with the shell.  The source <em>file</em> can have a .hs or .lhs
extension, or no extension at all.  Further <em>args</em> are passed
to the script program itself.

<p>
The recommended usage of <em>runhs</em> is to place a line like
<pre>
    #!/usr/local/bin/runhs
</pre>
at the beginning of your source script, also giving the file execute
permission.  You can then run the source file directly by typing
<tt>./filename</tt> in the shell.

<hr>
<p>
The latest updates to this software are available on the WWW from
<a href="http://www.haskell.org/hmake/">
<tt>http://www.haskell.org/hmake/</tt></a>
(<a href="http://www.cs.york.ac.uk/fp/hmake/">
<tt>http://www.cs.york.ac.uk/fp/hmake/</tt></a>)

<p>
Information last updated: 17th May 2005<br>
<a href="http://www.cs.york.ac.uk/fp/">
York Functional Programming Group</a><br>
[email protected]

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