<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>env</title><link rel="stylesheet" type="text/css" href="rivet.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="index.html" title="Apache Rivet"><link rel="up" href="commands.html" title="Rivet Tcl Commands and Variables"><link rel="prev" href="debug.html" title="debug"><link rel="next" href="escape_sgml_chars.html" title="escape_sgml_chars"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">env</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="debug.html"><img src="images/prev.png" alt="Prev"></a> </td><th width="60%" align="center">Rivet Tcl Commands and Variables</th><td width="20%" align="right"> <a accesskey="n" href="escape_sgml_chars.html"><img src="images/next.png" alt="Next"></a></td></tr></table></div><div class="refentry"><div class="refentry.separator"><hr></div><a name="env"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>env — 
		    Loads a single "environmental variable" into a Tcl variable.
		</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis" style="width:80%"><div style="border: 1px solid #282; margin:1ex ; padding:.4ex; padding-left: 0.8ex;   word-spacing:1ex "><span style="font-weight:bold ; font-family:monospace">::rivet::env</span>  ?<span style="font-family:monospace; font-weight: bold;"><em class="replaceable"><code>varName</code></em></span>?</div></div></div><div class="refsect1"><a name="idm854"></a><h2>Description</h2><p style="width:90%">
		    If it is only necessary to load one environmental variable,
		    this command may be used to avoid the overhead of loading
		    and storing the entire array.
		</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="debug.html"><img src="images/prev.png" alt="Prev"></a> </td><td width="20%" align="center"><a accesskey="u" href="commands.html"><img src="images/up.png" alt="Up"></a></td><td width="40%" align="right"> <a accesskey="n" href="escape_sgml_chars.html"><img src="images/next.png" alt="Next"></a></td></tr><tr><td width="40%" align="left" valign="top">debug </td><td width="20%" align="center"><a accesskey="h" href="index.html"><img src="images/home.png" alt="Home"></a></td><td width="40%" align="right" valign="top"> escape_sgml_chars</td></tr></table></div></body></html>