retroforth/doc/html/chapters/general/starting.html
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<p><br/><br/>
Retro can be run for scripting or interactive use.
<br/><br/>
<span class="h2">Interactive</span>
<br/><br/>
To start it interactively, run: <span class="tt">retro</span> without any command line
arguments, or with <span class="tt">-i</span>.
<br/><br/>
Starting the interactive system:
<br/><br/>
<span class='codeblock'><span class="tt">```</span><br/><span class="tt">retro </span><br/>
<span class="tt">```</span></span><br/><br/>
Or:
<br/><br/>
<span class='codeblock'><span class="tt">```</span><br/><span class="tt">retro -i </span><br/>
<span class="tt">```</span></span><br/><br/>
This should be sufficient for most uses.
<br/><br/>
<br/><br/>
Retro will work with piped input.
<br/><br/>
E.g.,
<br/><br/>
<span class='codeblock'><span class="tt">```</span><br/><span class="tt">echo "'lol s:put nl" <span class='defer'>|</span> retro </span><br/>
<span class="tt">```</span></span><br/><br/>
<br/><br/>
You can run code in a file very easily. This is simply:
<br/><br/>
<span class='codeblock'><span class="tt">```</span><br/><span class="tt">retro filename </span><br/>
<span class="tt">```</span></span><br/><br/>
You can follow the filename with any arguments that it may need.
These will be accessible to the program via the <span class="tt">script:arguments</span>
and <span class="tt">script:get-argument</span> words.
<br/><br/>
Source files must be written in Unu format.
<br/><br/>
<span class="h2">Scripting</span>
<br/><br/>
You can use Retro to write scripts. Add a shebang:
<br/><br/>
<span class='codeblock'><span class="tt">```</span><br/><span class="tt"><span class='num'>#!/usr/bin/env</span> retro </span><br/>
<span class="tt">```</span></span><br/><br/>
And make the file executable.
<br/><br/>
Source files must be written in Unu format.
<br/><br/>
<br/><br/>
For a summary of the full command line arguments available:
<br/><br/>
<tt class='indentedcode'>Scripting&nbsp;Usage:</tt>
<br/><br/>
<tt class='indentedcode'>&nbsp;&nbsp;&nbsp;&nbsp;retro&nbsp;filename&nbsp;[script&nbsp;arguments...]</tt>
<br/><br/>
<tt class='indentedcode'>Interactive&nbsp;Usage:</tt>
<br/><br/>
<tt class='indentedcode'>&nbsp;&nbsp;&nbsp;&nbsp;retro&nbsp;[-h]&nbsp;[-i]&nbsp;[-f&nbsp;filename]&nbsp;[-t]</tt>
<br/><br/>
<tt class='indentedcode'>&nbsp;&nbsp;-h&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Display&nbsp;this&nbsp;help&nbsp;text</tt>
<tt class='indentedcode'>&nbsp;&nbsp;-i&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interactive&nbsp;mode&nbsp;(line&nbsp;buffered)</tt>
<tt class='indentedcode'>&nbsp;&nbsp;-f&nbsp;filename&nbsp;&nbsp;Run&nbsp;the&nbsp;contents&nbsp;of&nbsp;the&nbsp;specified&nbsp;file</tt>
<tt class='indentedcode'>&nbsp;&nbsp;-t&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Run&nbsp;tests&nbsp;(in&nbsp;```&nbsp;blocks)&nbsp;in&nbsp;any&nbsp;loaded&nbsp;files</tt>
</p>
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