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<head>
<title>getenv(3) - Plan 9 from User Space</title>
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<tr><td width=20><td><b>GETENV(3)</b><td align=right><b>GETENV(3)</b>
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<p><font size=+1><b>NAME </b></font><br>
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getenv, putenv &ndash; access environment variables<br>
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<p><font size=+1><b>SYNOPSIS </b></font><br>
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<tt><font size=+1>#include &lt;u.h&gt;<br>
#include &lt;libc.h&gt;
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<tt><font size=+1>char* getenv(char *name)<br>
int &nbsp;&nbsp;&nbsp;&nbsp;putenv(char *name, char *val)<br>
</font></tt>
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<p><font size=+1><b>DESCRIPTION </b></font><br>
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<i>Getenv</i> fetches the environment value associated with <i>name</i> into
memory allocated with <a href="../man3/malloc.html"><i>malloc</i>(3)</a>, 0-terminates it, and returns
a pointer to that area. If no file exists, 0 is returned.
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<i>Putenv</i> sets the environment value associated with <i>name</i> to <i>val</i>.<br>
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<p><font size=+1><b>SOURCE </b></font><br>
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<tt><font size=+1>/usr/local/plan9/src/lib9/getenv.c<br>
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<p><font size=+1><b>DIAGNOSTICS </b></font><br>
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Sets <i>errstr</i>.<br>
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<p><font size=+1><b>BUGS </b></font><br>
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To avoid name conflicts with the underlying system, <i>getenv</i> and
<i>putenv</i> are preprocessor macros defined as <i>p9getenv</i> and <i>p9putenv</i>;
see <a href="../man3/intro.html"><i>intro</i>(3)</a>.<br>
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<!-- TRAILER -->
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<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a>
</center>
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<!-- TRAILER -->
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