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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>
Malcolm.Wallace@cs.york.ac.uk
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